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Статті в журналах з теми "Mesoscopic phenomena (Physics)"

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Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 31 липня 2024

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1

Büttiker, Markus, and Michael Moskalets. "FROM ANDERSON LOCALIZATION TO MESOSCOPIC PHYSICS." International Journal of Modern Physics B 24, no. 12n13 (May 20, 2010): 1555–76. http://dx.doi.org/10.1142/s0217979210064514.

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In the late seventies an increasing interest in the scaling theory of Anderson localization led to new efforts to understand the conductance of systems which scatter electrons elastically. The conductance and its relation to the scattering matrix emerged as an important subject. This, coupled with the desire to find explicit manifestations of single electron interference, led to the emergence of mesoscopic physics. We review electron transport phenomena which can be expressed elegantly in terms of the scattering matrix. Of particular interest are phenomena which depend not only on transmission probabilities but on both amplitude and phase of scattering matrix elements.

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2

Altshuler, B. L. "Transport Phenomena in Mesoscopic Systems." Japanese Journal of Applied Physics 26, S3-3 (January 1, 1987): 1938. http://dx.doi.org/10.7567/jjaps.26s3.1938.

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3

Guinea, F., and J. L. Vicent. "Collective phenomena in mesoscopic systems." European Physical Journal B 40, no. 4 (August 2004): 355. http://dx.doi.org/10.1140/epjb/e2004-00282-x.

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4

Zipper, E., and M. Lisowski. "Coherent phenomena in mesoscopic systems." Superconductor Science and Technology 13, no. 8 (July 27, 2000): 1191–96. http://dx.doi.org/10.1088/0953-2048/13/8/315.

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5

Pagonabarraga, Ignacio, Fabrizio Capuani, and Daan Frenkel. "Mesoscopic lattice modeling of electrokinetic phenomena." Computer Physics Communications 169, no. 1-3 (July 2005): 192–96. http://dx.doi.org/10.1016/j.cpc.2005.03.043.

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6

Bismayer, Ulrich, and Klaus Bandel. "Interface Phenomena." Solid State Phenomena 200 (April 2013): 69–72. http://dx.doi.org/10.4028/www.scientific.net/ssp.200.69.

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Interfaces are common microstructures and occur in natural and synthetic materials on the local to mesoscopic lenght scale, like ferroic twin walls or interfaces between amorphous and crystalline material. Individual interfaces can be thin walls extended over a few unit cells or even thicker walls up to several 10000 Å. Walls show distinct physical properties and can therefore influence the macroscopic materials properties considerably. Examples of wall structures and their local features related with ferroic, non-ferroic and biomaterials are presented in this work.

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7

Chetverikov, Aleksandr, and Werner Ebeling. "Nonlinear problems of molecular physics." Izvestiya VUZ. Applied Nonlinear Dynamics 10, no. 3 (September 30, 2002): 3–21. http://dx.doi.org/10.18500/0869-6632-2002-10-3-3-21.

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A survey оn investigations of some nonlinear problems оf molecular physics carried out by molecular dynamics simulations is given. Among them there are problems of elementary excitations in fluids, the dynamics оf chemical reactions in solutions, dynamical properties of dilute plasma, dynamic phenomena in phase transitions in mesoscopic systems, structural properties of chains оf nonlinear oscillators. Several new results about the distribution оf clusters and of а method of identification of clusters are presented.

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8

Jaroszyński, J., and T. Dietl. "Mesoscopic phenomena in diluted magnetic semiconductors." Materials Science and Engineering: B 84, no. 1-2 (July 2001): 81–87. http://dx.doi.org/10.1016/s0921-5107(01)00574-8.

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9

Salje, E. K. H., and S. Ríos. "Mineral physics: the atomic, mesoscopic and macroscopic perspective." Mineralogical Magazine 66, no. 5 (October 2002): 733–44. http://dx.doi.org/10.1180/0026461026650058.

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AbstractThe macroscopic behaviour of minerals is not always directly related to their crystalline structure at the atomic scale but often depends explicitly on mesoscopic (nanometer–micrometer) features. This paper reviews various cases where the macroscopic phenomena differ from those of the bulk, with structural and chemical variations related to: domain walls, leading to enhanced or reduced transport properties; surfaces controlling growth morphologies; and radiation-damaged minerals where the interface between the amorphous and crystalline phase is believed to play a key role in hydrothermal leaching behaviour. Minerals explicitly discussed are: quartz, agate, hydroxylapatite, cordierite and metamict zircon.

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10

Frassanito, R., P. Visani, M. Nideröst, A. C. Mota, P. Smeibidl, K. Swieca, W. Wendler, and F. Pobell. "Quantum-coherent phenomena in mesoscopic proximity structures." Czechoslovak Journal of Physics 46, S4 (April 1996): 2317–18. http://dx.doi.org/10.1007/bf02571150.

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11

Dietl, T., G. Grabecki, and J. Jaroszynski. "Mesoscopic phenomena in diluted magnetic semiconductors." Semiconductor Science and Technology 8, no. 1S (January 1, 1993): S141—S146. http://dx.doi.org/10.1088/0268-1242/8/1s/032.

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12

Dulin, M. N. "Critical phenomena in particles of mesoscopic size." Zeitschrift f�r Physik D Atoms, Molecules and Clusters 26, no. 1-4 (March 1993): 172–74. http://dx.doi.org/10.1007/bf01429134.

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13

YAMAZAKI, YOSHITAKE, HERBERT GLEITER, CHENXU WU, VLADISLAV ALYOSHIN, JULY KRASILNIKOVA, and ILYA KRASILNIKOV. "CHARACTERISTICS OF MESOSCOPIC PHASE TRANSITIONS IN TWO-DIMENSIONAL SIMPLE NANOSTRUCTURED MATERIALS." International Journal of Modern Physics B 17, no. 25 (October 10, 2003): 4539–54. http://dx.doi.org/10.1142/s0217979203022982.

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Анотація:

In order to study nanostructured materials, a fundamental framework of the theory and the computer-experimental studies is established. The essential characteristics of the mesoscopic phase transitions and critical phenomena in these materials are evaluated by means of this approach. For nanostructured materials consisting of inert gas atoms, we study mesoscopic phase transitions and critical phenomena by generalizing the renormalization theory and the Metropolis Monte Carlo method. The results obtained by the both methods are reported in two papers: computational results in the present paper and the theoretical results in the paper which follows.

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14

Bishop, A. R. "Mesoscopic phenomena in two-dimensional condensed matter systems." Physica Scripta T49B (January 1, 1993): 667–71. http://dx.doi.org/10.1088/0031-8949/1993/t49b/049.

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15

Dvurechenskii, A. V., A. I. Yakimov, and N. P. Stepina. "Mesoscopic Phenomena in a-Si Based Microstructures." physica status solidi (b) 205, no. 1 (January 1998): 193–98. http://dx.doi.org/10.1002/(sici)1521-3951(199801)205:1<193::aid-pssb193>3.0.co;2-s.

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16

Grabecki, G., T. Dietl, W. Plesiewicz, A. Lenard, T. Skośkiewicz, E. Kamińska, A. Piotrowska, E. Papis, N. Frank, and G. Bauer. "Mesoscopic Phenomena in Microstructures of IV-VI Epilayers." Acta Physica Polonica A 87, no. 2 (February 1995): 551–54. http://dx.doi.org/10.12693/aphyspola.87.551.

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17

Grabecki, Grzegorz, Shojiro Takeyama, Satoru Adachi, Yoshihiro Takagi, Tomasz Dietl, Eliana Kamiń, Anna Piotrowska, Ewa Papis, Norbert Frank, and Günther Bauer. "Mesoscopic Phenomena in Microstructures of IV–VI Epilayers." Japanese Journal of Applied Physics 34, Part 1, No. 8B (August 30, 1995): 4433–35. http://dx.doi.org/10.1143/jjap.34.4433.

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18

Moshchalkov, V. V., L. Gielen, M. Baert, V. Metlushko, G. Neuttiens, C. Strunk, V. Bruyndoncx, et al. "Quantum interference and confinement phenomena in mesoscopic superconducting systems." Physica Scripta T55 (January 1, 1994): 168–76. http://dx.doi.org/10.1088/0031-8949/1994/t55/030.

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19

Gogadze, G. A. "Coherent quantum phenomena in mesoscopic metallic conductors (Review Article)." Low Temperature Physics 36, no. 10 (October 2010): 865–75. http://dx.doi.org/10.1063/1.3517056.

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20

Chan, K. C., P. F. Lee, and J. Y. Dai. "Mesoscopic phenomena in Au nanocrystal floating gate memory structure." Applied Physics Letters 95, no. 11 (September 14, 2009): 113109. http://dx.doi.org/10.1063/1.3229885.

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21

Iyer, Rajan. "Algorithm it Quantitative Physics Coding Quantum Astrospace Timeline." Oriental Journal of Physical Sciences 8, no. 2 (January 20, 2024): 58–67. http://dx.doi.org/10.13005/ojps08.02.04.

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We propose a novel formalism for physical quantifiability based on a rank-4 tensor time matrix that abstracts informational observables in different domains of reality. We show that our formalism can reveal two types of time representations: arithmetic and algebraic and provide analytical explanations for their properties and relations. We also demonstrate how our formalism can account for various physical phenomena, such as spin, rotation, revolution, and angular gauge momentum, and provide correlative proofs from quantum, mesoscopic, and astrophysical domains. Our formalism contributes to the ongoing quest for a unified theory of physics and has implications for the future of science and technology.

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22

Pekola, Jukka P. "Quantum thermodynamics at low temperatures." Europhysics News 52, no. 3 (2021): 15–17. http://dx.doi.org/10.1051/epn/2021302.

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Low temperature phenomena and methods are quantum thermodynamics per se. Modern engineered quantum systems, for instance those used for superconducting quantum information processing and mesoscopic electron transport, provide working media for realizing devices such as quantum heat engines and refrigerators and a testbed for fundamental principles and phenomena in thermodynamics of quantum systems and processes.

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23

Li, Demei, Huilin Lai, and Chuandong Lin. "Mesoscopic Simulation of the Two-Component System of Coupled Sine-Gordon Equations with Lattice Boltzmann Method." Entropy 21, no. 6 (May 28, 2019): 542. http://dx.doi.org/10.3390/e21060542.

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In this paper, a new lattice Boltzmann model for the two-component system of coupled sine-Gordon equations is presented by using the coupled mesoscopic Boltzmann equations. Via the Chapman-Enskog multiscale expansion, the macroscopical governing evolution system can be recovered correctly by selecting suitable discrete equilibrium distribution functions and the amending functions. The mesoscopic model has been validated by several related issues where analytic solutions are available. The experimental results show that the numerical results are consistent with the analytic solutions. From the mesoscopic point of view, the present approach provides a new way for studying the complex nonlinear partial differential equations arising in natural nonlinear phenomena of engineering and science.

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24

Chen, Bin, Xiaojuan Shen, LiLy Sun, and Rushan Han. "Macroscopic Quantum Coherent Phenomena in the Mesoscopic Electric Circuit." International Journal of Theoretical Physics 46, no. 2 (January 17, 2007): 199–205. http://dx.doi.org/10.1007/s10773-006-9106-3.

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25

SEROTA, R. A. "QUANTUM LIMIT OF CHAOTIC SYSTEMS AS QUANTUM DIFFUSION." Modern Physics Letters B 08, no. 20 (August 30, 1994): 1243–51. http://dx.doi.org/10.1142/s0217984994001230.

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We describe classical chaotic motion in terms of diffusion in configurational space. This approach is illustrated for chaotic billiards and an oscillator with anharmonic coupling. It is argued that in the quantum limit, physical phenomena ordinarily associated with disordered metals, such as localization and mesoscopic phenomena, carry over to chaotic systems in general which are in the universality class of the nonlinear σ model.

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26

Konstantinova, Tetyana, Igor Danilenko, Valentina Glazunova, Galina Volkova, and Oksana Gorban. "Mesoscopic phenomena in oxide nanoparticles systems: processes of growth." Journal of Nanoparticle Research 13, no. 9 (March 25, 2011): 4015–23. http://dx.doi.org/10.1007/s11051-011-0329-8.

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27

Hsu, J. P. "Fuzzy Transitions from Quantum to Classical Mechanics and New Phenomena of Mesoscopic Objects." Zeitschrift für Naturforschung A 52, no. 1-2 (February 1, 1997): 25–30. http://dx.doi.org/10.1515/zna-1997-1-209.

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Abstract A new "phase invariant" equation of motion for both microscopic and macroscopic objects is proposed. It reduces to the probabilistic wave equation for small masses and the deterministic classical equation for large masses. The motions of mesoscopic objects and fuzzy transitions between quantum and classical mechanics are discussed on the basis of the generalized equation. Experimental tests of new predictions are discussed.

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28

Sheng, Ping, and Bart van Tiggelen. "Introduction to Wave Scattering, Localization and Mesoscopic Phenomena. Second edition." Waves in Random and Complex Media 17, no. 2 (April 26, 2007): 235–37. http://dx.doi.org/10.1080/17455030701219165.

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29

Kleemann, Wolfgang, Jan Dec, Alexander Tkach, and Paula M. Vilarinho. "SrTiO3—Glimpses of an Inexhaustible Source of Novel Solid State Phenomena." Condensed Matter 5, no. 4 (October 4, 2020): 58. http://dx.doi.org/10.3390/condmat5040058.

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Анотація:

The purpose of this selective review is primarily to demonstrate the large versatility of the insulating quantum paraelectric perovskite SrTiO3 explained in “Introduction” part, and “Routes of SrTiO3 toward ferroelectricity and other collective states” part. Apart from ferroelectricity under various boundary conditions, it exhibits regular electronic and superconductivity via doping or external fields and is capable of displaying diverse coupled states. “Magnetoelectric multiglass (Sr,Mn)TiO3” part, deals with mesoscopic physics of the solid solution SrTiO3:Mn2+. It is at the origin of both polar and spin cluster glass forming and is altogether a novel multiferroic system. Independent transitions at different glass temperatures, power law dynamic criticality, divergent third-order susceptibilities, and higher order magneto-electric interactions are convincing fingerprints.

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30

Mortensen, N. Asger. "Mesoscopic electrodynamics at metal surfaces." Nanophotonics 10, no. 10 (June 25, 2021): 2563–616. http://dx.doi.org/10.1515/nanoph-2021-0156.

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Abstract Plasmonic phenomena in metals are commonly explored within the framework of classical electrodynamics and semiclassical models for the interactions of light with free-electron matter. The more detailed understanding of mesoscopic electrodynamics at metal surfaces is, however, becoming increasingly important for both fundamental developments in quantum plasmonics and potential applications in emerging light-based quantum technologies. The review offers a colloquial introduction to recent mesoscopic formalism, ranging from quantum-corrected hydrodynamics to microscopic surface-response formalism, offering also perspectives on possible future avenues.

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31

NAZMITDINOV, R. G., and A. PUENTE. "SYMMETRY BREAKING PHENOMENA IN MESOSCOPIC SYSTEMS: QUANTUM DOTS AND ROTATING NUCLEI." International Journal of Modern Physics E 18, no. 04 (April 2009): 1014–21. http://dx.doi.org/10.1142/s0218301309013178.

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A brief description of excited and ground states in two-dimensional quantum dots and rotating nuclei is presented within a mean field approach and a random-phase approximation (RPA). We discuss the procedure to restore the rotational symmetry broken at the mean field, which can be extended for other symmetry breaking cases. We propose to consider a disappearance of collective excitations in the rotating frame as a manifestation of symmetry breaking phenomena of the rotating mean field. In particular, we demonstrate that the disappearance of a collective octupole mode in the rotating frame in 162 Yb gives rise to the nonaxial octupole deformation.

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32

Rotondi, R., S. Succi, and G. Bella. "Direct Simulation of Fluid Transport at Solid Interfaces with a Multiscale Lattice-Boltzmann Finite-Volume Method." Applied Rheology 14, no. 1 (February 1, 2004): 12–21. http://dx.doi.org/10.1515/arh-2004-0001.

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Abstract It is shown that the combined use of a mesoscopic lattice Boltzmann solver with finite-volume techniques, both enriched with local-refinement (multiscale) capabilities, permits to describe transport phenomena at fluid-solid interfaces to a degree of detail which may help dispensing with empirical correlations.

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33

Katsumoto, Shingo, Hideki Sato, and Yasuhiro Iye. "Duality between Single-Electron Phenomena and Flux Quantization in Mesoscopic Superconductors." Japanese Journal of Applied Physics 38, Part 1, No. 1B (January 30, 1999): 350–53. http://dx.doi.org/10.1143/jjap.38.350.

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34

Ho, S., and K. Yamaguchi. "Effects of reservoirs on quantum transport phenomena in mesoscopic systems." Semiconductor Science and Technology 7, no. 3B (March 1, 1992): B430—B433. http://dx.doi.org/10.1088/0268-1242/7/3b/111.

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35

Destainville, Nicolas, Manoel Manghi, and Julie Cornet. "A Rationale for Mesoscopic Domain Formation in Biomembranes." Biomolecules 8, no. 4 (September 29, 2018): 104. http://dx.doi.org/10.3390/biom8040104.

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Cell plasma membranes display a dramatically rich structural complexity characterized by functional sub-wavelength domains with specific lipid and protein composition. Under favorable experimental conditions, patterned morphologies can also be observed in vitro on model systems such as supported membranes or lipid vesicles. Lipid mixtures separating in liquid-ordered and liquid-disordered phases below a demixing temperature play a pivotal role in this context. Protein-protein and protein-lipid interactions also contribute to membrane shaping by promoting small domains or clusters. Such phase separations displaying characteristic length-scales falling in-between the nanoscopic, molecular scale on the one hand and the macroscopic scale on the other hand, are named mesophases in soft condensed matter physics. In this review, we propose a classification of the diverse mechanisms leading to mesophase separation in biomembranes. We distinguish between mechanisms relying upon equilibrium thermodynamics and those involving out-of-equilibrium mechanisms, notably active membrane recycling. In equilibrium, we especially focus on the many mechanisms that dwell on an up-down symmetry breaking between the upper and lower bilayer leaflets. Symmetry breaking is an ubiquitous mechanism in condensed matter physics at the heart of several important phenomena. In the present case, it can be either spontaneous (domain buckling) or explicit, i.e., due to an external cause (global or local vesicle bending properties). Whenever possible, theoretical predictions and simulation results are confronted to experiments on model systems or living cells, which enables us to identify the most realistic mechanisms from a biological perspective.

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36

Choi, B. C., G. Arnup, M. Belov, and M. R. Freeman. "Novel phenomena in dynamic domain configurations in mesoscopic magnetic thin film elements." Journal of Applied Physics 95, no. 11 (June 2004): 6540–42. http://dx.doi.org/10.1063/1.1687254.

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37

Lakunov, I. S., S. V. Egorov, E. D. Mukhanova, I. E. Batov, T. E. Golikova, and V. V. Ryazanov. "Nonequilibrium Phenomena in Planar Mesoscopic Josephson SNS Structures Based on Superconducting Nb." JETP Letters 118, no. 9 (November 2023): 644–50. http://dx.doi.org/10.1134/s0021364023602981.

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38

Ren, Xiaobing, and Kazuhiro Otsuka. "The Interaction of Point Defects with the Martensitic Transformation: A Prototype of Exotic Multiscale Phenomena." MRS Bulletin 27, no. 2 (February 2002): 116–20. http://dx.doi.org/10.1557/mrs2002.47.

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AbstractThe martensitic transformation has so far been studied without considering its interaction with point defects. In this article, we shall show that such interaction, which stems from a universal symmetry property of point defects, can create a rich spectrum of exotic multiscale phenomena in martensitic materials. These phenomena include unique short-range diffusion at the atomic or nano level, remarkable domain-pattern memory at the mesoscopic level, and peculiar rubber-like behavior and aging-induced two-way shape memory at the macroscopic level. Exotic multiscale phenomena may also be found in a wide range of transforming materials, such as ferroelastic, ferroelectric, and ferromagnetic materials. These novel effects may provide new opportunities for these important materials.

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39

Ilg, Patrick. "Multiparticle collision dynamics for ferrofluids." Journal of Chemical Physics 156, no. 14 (April 14, 2022): 144905. http://dx.doi.org/10.1063/5.0087981.

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Анотація:

Detailed studies of the intriguing field-dependent dynamics and transport properties of confined flowing ferrofluids require efficient mesoscopic simulation methods that account for fluctuating ferrohydrodynamics. Here, we propose such a new mesoscopic model for the dynamics and flow of ferrofluids, where we couple the multi-particle collision dynamics method as a solver for the fluctuating hydrodynamics equations to the stochastic magnetization dynamics of suspended magnetic nanoparticles. This hybrid model is validated by reproducing the magnetoviscous effect in Poiseuille flow, obtaining the rotational viscosity in quantitative agreement with theoretical predictions. We also illustrate the new method for the benchmark problem of flow around a square cylinder. Interestingly, we observe that the length of the recirculation region is increased, whereas the drag coefficient is decreased in ferrofluids when an external magnetic field is applied compared with the field-free case at the same effective Reynolds number. The presence of thermal fluctuations and the flexibility of this particle-based mesoscopic method provide a promising tool to investigate a broad range of flow phenomena of magnetic fluids, and the method could also serve as an efficient way to simulate solvent effects when colloidal particles are immersed in ferrofluids.

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40

Krektuleva, R. A. "Computer-aided design methods for functionally graded materials showing mesoscopic phenomena." Powder Metallurgy and Metal Ceramics 38, no. 11-12 (November 1999): 541–44. http://dx.doi.org/10.1007/bf02676183.

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41

ZHANG, SHENGLI, QI WANG, and ERHU ZHANG. "THE GEOMETRICAL EFFECTS ON ELECTRONIC SPECTRUM AND PERSISTENT CURRENTS IN MESOSCOPIC POLYGON." Modern Physics Letters B 23, no. 02 (January 20, 2009): 191–201. http://dx.doi.org/10.1142/s0217984909017959.

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Анотація:

In this paper, a new mesoscopic polygon which possesses smooth transition at its corners is proposed. Because of the particularity of structure, this kind of mesoscopic polygon can also be a geometrical superlattice. The geometrical effects on the electron states and persistent current are investigated comprehensively in the presence of magnetic flux. We find that the particular geometric structure of the polygon induces an effective periodic potential which results in gaps in the energy spectrum. The changes of gaps show the consistency with the geometrical two-ness of this new polygon. This electronic structure and the corresponding physical properties are found to be periodic with period ϕ0 in the magnetic flux ϕ and can be controlled by the geometric method. We also consider the Rahsba spin-orbit interaction which double the energy levels splitting and leads to an additional small zigzag in one period of the persistent current. These new phenomena may be useful for the applications in quantum device design in the future.

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42

Antonov, Vladimir N., and Hideaki Takayanagi. "Essence of “proximity” model for interference phenomena in mesoscopic normal metal-superconducting structures." Czechoslovak Journal of Physics 46, S4 (April 1996): 2313–14. http://dx.doi.org/10.1007/bf02571148.

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43

Ragazzi, St, A. Di Carlo, P. Lugli, and F. Rossi. "Analysis of Quantum-Transport Phenomena in Mesoscopic Systems: A Monte Carlo Approach." physica status solidi (b) 204, no. 1 (November 1997): 339–42. http://dx.doi.org/10.1002/1521-3951(199711)204:1<339::aid-pssb339>3.0.co;2-j.

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44

Hnatič, Michal, Juha Honkonen, and Tomáš Lučivjanský. "Symmetry Breaking in Stochastic Dynamics and Turbulence." Symmetry 11, no. 10 (September 23, 2019): 1193. http://dx.doi.org/10.3390/sym11101193.

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Анотація:

Symmetries play paramount roles in dynamics of physical systems. All theories of quantum physics and microworld including the fundamental Standard Model are constructed on the basis of symmetry principles. In classical physics, the importance and weight of these principles are the same as in quantum physics: dynamics of complex nonlinear statistical systems is straightforwardly dictated by their symmetry or its breaking, as we demonstrate on the example of developed (magneto)hydrodynamic turbulence and the related theoretical models. To simplify the problem, unbounded models are commonly used. However, turbulence is a mesoscopic phenomenon and the size of the system must be taken into account. It turns out that influence of outer length of turbulence is significant and can lead to intermittency. More precisely, we analyze the connection of phenomena such as behavior of statistical correlations of observable quantities, anomalous scaling, and generation of magnetic field by hydrodynamic fluctuations with symmetries such as Galilean symmetry, isotropy, spatial parity and their violation and finite size of the system.

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45

Holmvall, P., N. Wall Wennerdal, M. Håkansson, P. Stadler, O. Shevtsov, T. Löfwander, and M. Fogelström. "SuperConga: An open-source framework for mesoscopic superconductivity." Applied Physics Reviews 10, no. 1 (March 2023): 011317. http://dx.doi.org/10.1063/5.0100324.

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We present SuperConga, an open-source framework for simulating equilibrium properties of unconventional and ballistic singlet superconductors, confined to two-dimensional (2D) mesoscopic grains in a perpendicular external magnetic field, at arbitrary low temperatures. It aims at being both fast and easy to use, enabling research without access to a computer cluster, and visualization in real-time with OpenGL. The core is written in C++ and CUDA, exploiting the embarrassingly parallel nature of the quasiclassical theory of superconductivity by utilizing the parallel computational power of modern graphics processing units. The framework self-consistently computes both the superconducting order-parameter and the induced vector potential and finds the current density, free energy, induced flux density, local density of states (LDOS), and the magnetic moment. A user-friendly Python frontend is provided, enabling simulation parameters to be defined via intuitive configuration files, or via the command-line interface, without requiring a deep understanding of implementation details. For example, complicated geometries can be created with relative ease. The framework ships with simple tools for analyzing and visualizing the results, including an interactive plotter for spectroscopy. An overview of the theory is presented, as well as examples showcasing the framework's capabilities and ease of use. The framework is free to download from https://gitlab.com/superconga/superconga , which also links to the extensive user manual, containing even more examples, tutorials, and guides. To demonstrate and benchmark SuperConga, we study the magnetostatics, thermodynamics, and spectroscopy of various phenomena. In particular, we study flux quantization in solenoids, vortex physics, surface Andreev bound-states, and a “phase crystal.” We compare our numeric results with analytics and present experimental observables, e.g., the magnetic moment and LDOS, measurable with, for example, scanning probes, STM, and magnetometry.

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46

MEZEI, FERENC. "STUDY OF SLOW DYNAMICAL PROCESSES BY NEUTRON-SPIN-ECHO." International Journal of Modern Physics B 07, no. 16n17 (July 30, 1993): 2885–907. http://dx.doi.org/10.1142/s0217979293003085.

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Conventional resolution inelastic neutron scattering spectroscopy allows us to explore the behaviour of condensed matter essentially on the time scale of thermal atomic vibrations. By the application of the Neutron Spin Echo trick, which enables us to get around the Liouville theorem limitation of conventional methods, the resolution can be improved very substantially. This opened up the field for the study of a large variety of slow motion phenomena (critical slowing down, relaxation effects, disordered dynamics, soft matter), i.e. the investigation of processes on a mesoscopic time scale between microscopic collision times and macroscopic dynamics.

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47

KLEEMANN, WOLFGANG. "RANDOM-FIELD INDUCED ANTIFERROMAGNETIC, FERROELECTRIC AND STRUCTURAL DOMAIN STATES." International Journal of Modern Physics B 07, no. 13 (June 15, 1993): 2469–507. http://dx.doi.org/10.1142/s0217979293002912.

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The occurrence of metastable or stable domain states on mesoscopic length scales seems to be a widespread property of many solids undergoing phase transitions in the presence of quenched random fields. A survey is given on the experimental evidence of domain states in various magnetic, ferroelectric and structural systems. In particular we discuss phenomena like the excess magnetization of field-cooled diluted uniaxial antiferromagnets and its relaxation. The domain state of the relaxor ferroelectric PbM g1/3 Nb 2/3O3 is due to the random distribution of B site cations, whereas dipolar quenched impurities give rise to mesoscopic disorder in K 1−x Li x TaO 3 and Sr 1−x Ca x TiO 3. Spontaneously relaxing quadrupolar domain states are observed in KTa 1−x Nb x O 3. They are probably caused by random strain fields due to ionic size mismatch. The same type of random fields determines the critical behavior of the Jahn-Teller compound DyAs x V 1−x O 4 but merely causes roughening of the natural ferroeleastic twin domain walls.

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48

Persky, Eylon, Ilya Sochnikov, and Beena Kalisky. "Studying Quantum Materials with Scanning SQUID Microscopy." Annual Review of Condensed Matter Physics 13, no. 1 (March 10, 2022): 385–405. http://dx.doi.org/10.1146/annurev-conmatphys-031620-104226.

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Electronic correlations give rise to fascinating macroscopic phenomena such as superconductivity, magnetism, and topological phases of matter. Although these phenomena manifest themselves macroscopically, fully understanding the underlying microscopic mechanisms often requires probing on multiple length scales. Spatial modulations on the mesoscopic scale are especially challenging to probe, owing to the limited range of suitable experimental techniques. Here, we review recent progress in scanning superconducting quantum interference device (SQUID) microscopy. We demonstrate how scanning SQUID combines unmatched magnetic field sensitivity and highly versatile designs, by surveying discoveries in unconventional superconductivity, exotic magnetism, topological states, and more. Finally, we discuss how SQUID microscopy can be further developed to answer the increasing demand for imaging new quantum materials.

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49

Mello, Pier A. "Complex wave-interference phenomena: From the atomic nucleus to mesoscopic systems to microwave cavities." Pramana 56, no. 2-3 (February 2001): 425–37. http://dx.doi.org/10.1007/s12043-001-0136-3.

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50

RAO, SUMATHI. "TRANSPORT IN LUTTINGER LIQUIDS." International Journal of Modern Physics B 14, no. 19n20 (August 10, 2000): 2157–69. http://dx.doi.org/10.1142/s0217979200001278.

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We give a brief introduction to Luttinger liquids and to the phenomena of electronic transport or conductance in quantum wires. We explain why the subject of transport in Luttinger liquids is relevant and fascinating and review some important results on tunneling through barriers in a one-dimensional quantum wire and the phenomena of persistent currents in mesoscopic rings. We give a brief description of our own work on transport through doubly-crossed Luttinger liquids and transport in the Schulz–Shastry exactly solvable Luttinger-like model. With a view to making this article accessible to researchers in diverse fields such as nuclear physics, particle physics, formal field theory and condensed matter physics, we begin by first giving a brief introduction. In Sec. 1, we explain the words such as "Luttinger liquid" and "transport" in the title. We also motivate the study of this subject by showing that field is very important at the current time from the applications point of view and describe why it is theoretically fascinating. We then give a quick review of some of the important results in the field in Sec. 2, before we go on to describe some work that we have recently done and are doing in this field in Sec. 3. Finally, in Sec. 4, we conclude by re-emphasizing the importance of this area and drawing attention towards future possibilities.

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