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Gotowe bibliografie tematyczne / Electron-phonon mediated many-body states

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Gotowa bibliografia na temat „Electron-phonon mediated many-body states”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Electron-phonon mediated many-body states"

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Liu, Teng, Peng-Fei Lu, Bi-Ying Hu, et al. "Phonon-mediated many-body quantum entanglement and logic gates in ion traps." Acta Physica Sinica 71, no. 8 (2022): 1. http://dx.doi.org/10.7498/aps.71.20220360.

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The implementation of high-fidelity multi-ion entangled states and quantum gates are the basis for ion trap quantum computing. There are developed quantum gate experimental schemes for realizing multi-ion entanglement and quantum gate, such as Mølmer-Sørensen Gate and Cirac-Zoller Gate; In recent years, there are also ultrafast entanglement gates that operate outside the Lamb-Dicke regime by designing ultrafast pulse sequences. In this typical many-body quantum system, these entanglement gate schemes all couple the spin states between ions by driving the phonon energy level or motion state of

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Wen, Zhiyuan, Jiaheng Li, Ziqiang Wang, Yong Xu, and Jing Zhu. "Soft-mode-phonon-mediated insulator–superconductor transition in doped two-dimensional topological insulator RuC." Applied Physics Letters 121, no. 1 (2022): 013102. http://dx.doi.org/10.1063/5.0095044.

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Recently, the search of superconducting materials with topological states has attracted extensive interest due to their exotic properties. By using first-principles calculations, we predict that RuC monolayer is a two-dimensional topological insulator (TI) and shows a TI–superconductor transition under electron doping, leading to a superconducting transition temperature Tc of 1.4 K. Further analysis reveals that the emergence of superconductivity in RuC depends critically on the existence of flatband optical phonons as well as the appearance of multiple electron-pockets and phonon mode softeni

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Bastarrachea-Magnani, Miguel Angel, Jannie Thomsen, Arturo Camacho-Guardian, and Georg M. Bruun. "Polaritons in an Electron Gas—Quasiparticles and Landau Effective Interactions." Atoms 9, no. 4 (2021): 81. http://dx.doi.org/10.3390/atoms9040081.

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Two-dimensional semiconductors inside optical microcavities have emerged as a versatile platform to explore new hybrid light–matter quantum states. A strong light–matter coupling leads to the formation of exciton-polaritons, which in turn interact with the surrounding electron gas to form quasiparticles called polaron-polaritons. Here, we develop a general microscopic framework to calculate the properties of these quasiparticles, such as their energy and the interactions between them. From this, we give microscopic expressions for the parameters entering a Landau theory for the polaron-polarit

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Elsaesser, Thomas. "Structural dynamics of ionic materials mapped by femtosecond x-ray diffraction." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C769. http://dx.doi.org/10.1107/s2053273314092304.

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Relocation of electronic charge plays a key role for functional processes in condensed-phase molecular materials. X-ray diffraction with a femtosecond time resolution allows for spatially resolving transient atomic arrangements and charge distributions [1]. In particular, time-dependent spatial maps of electron density have been derived from x-ray powder diffraction patterns measured with a 100 fs time resolution. In this talk, new results on electron dynamics in transition metal complexes and on field-driven charge relocations in elementary ionic materials will be presented. Crystals containi

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Ding, Hao, Yuwen Hu, Mallika T. Randeria, et al. "Tuning interactions between spins in a superconductor." Proceedings of the National Academy of Sciences 118, no. 14 (2021): e2024837118. http://dx.doi.org/10.1073/pnas.2024837118.

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Novel many-body and topological electronic phases can be created in assemblies of interacting spins coupled to a superconductor, such as one-dimensional topological superconductors with Majorana zero modes (MZMs) at their ends. Understanding and controlling interactions between spins and the emergent band structure of the in-gap Yu–Shiba–Rusinov (YSR) states they induce in a superconductor are fundamental for engineering such phases. Here, by precisely positioning magnetic adatoms with a scanning tunneling microscope (STM), we demonstrate both the tunability of exchange interaction between spi

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Gupta, Anushri, Sanjeev K. Verma, Anita Kumari, and B. D. Indu. "Generalized phonon density of states of La2−xSrxCuO4 cuprate superconductor." International Journal of Modern Physics B 33, no. 28 (2019): 1950328. http://dx.doi.org/10.1142/s0217979219503284.

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Many body quantum dynamics of phonons is steadily developed by considering the various effects of anharmonicities, defects (consider as doping or impurity concentration) and electron–phonon interactions in model Hamiltonian (instead of BCS Hamiltonian) for a high-temperature superconductor (HTS). This enables to obtain the expressions for the renormalized phonon spectrum, the renormalized phonon density of states (RPDOS). The RPDOS can be resolved into diagonal and nondiagonal parts where the nondiagonal component is found highly impurity-dependent. Considering the suitable Born–Mayer–Huggins

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HU, BEN YU-KUANG. "MANY-BODY EFFECTS IN FRICTIONAL DRAG BETWEEN COUPLED TWO-DIMENSIONAL ELECTRON SYSTEMS." International Journal of Modern Physics B 13, no. 05n06 (1999): 469–78. http://dx.doi.org/10.1142/s0217979299000369.

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Independently contacted coupled quantum wells separated by barriers which allow significant interlayer interactions but no tunneling have been fabricated. When current is passed through one layer, the interlayer interactions drag carriers in the second layer, resulting in a voltage response (for open circuits). The magnitude of the response gives a quantitative measure of the effective interlayer interactions and response functions of the system, and hence this is an excellent laboratory for the study of many-body phenomena in two-dimensional electron gases. We review the Boltzmann and Kubo fo

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Jang, Joonho, Heun Mo Yoo, L. N. Pfeiffer, K. W. West, K. W. Baldwin, and Raymond C. Ashoori. "Full momentum- and energy-resolved spectral function of a 2D electronic system." Science 358, no. 6365 (2017): 901–6. http://dx.doi.org/10.1126/science.aam7073.

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The single-particle spectral function measures the density of electronic states in a material as a function of both momentum and energy, providing central insights into strongly correlated electron phenomena. Here we demonstrate a high-resolution method for measuring the full momentum- and energy-resolved electronic spectral function of a two-dimensional (2D) electronic system embedded in a semiconductor. The technique remains operational in the presence of large externally applied magnetic fields and functions even for electronic systems with zero electrical conductivity or with zero electron

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Gupta, Anushri, Sanjeev K. Verma, Anita Kumari, and B. D. Indu. "Impurity induced renormalized phonon spectrum of cuprate superconductors." International Journal of Modern Physics B 32, no. 22 (2018): 1850237. http://dx.doi.org/10.1142/s0217979218502375.

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The potential problem of anharmonic lattice vibrations in high-temperature superconductors (HTS) using the most suitable Born–Mayer–Huggins (BMH) potential has been taken up to investigate the renormalized phonon density of states (RPDOS). In order to develop the suitable results, the many body theory using quantum dynamical approach of Green’s function (GF) via an almost complete Hamiltonian (without using BCS type Hamiltonian) has been incorporated which includes harmonic electron and phonon Hamiltonian, electron–phonon interaction Hamiltonian, anharmonic and defect Hamiltonian. The derivati

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Wei, Yao, Francesco Macheda, Zelong Zhao, et al. "High-Temperature Superconductivity in the Lanthanide Hydrides at Extreme Pressures." Applied Sciences 12, no. 2 (2022): 874. http://dx.doi.org/10.3390/app12020874.

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Hydrogen-rich superhydrides are promising high-Tc superconductors, with superconductivity experimentally observed near room temperature, as shown in recently discovered lanthanide superhydrides at very high pressures, e.g., LaH10 at 170 GPa and CeH9 at 150 GPa. Superconductivity is believed to be closely related to the high vibrational modes of the bound hydrogen ions. Here, we studied the limit of extreme pressures (above 200 GPa) where lanthanide hydrides with large hydrogen content have been reported. We focused on LaH16 and CeH16, two prototype candidates for achieving a large electronic c

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