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Artykuły w czasopismach na temat "Matériaux de Mott"
Obadia, Lionel. "Mort, eschatologie individuelle et eschatologie individualisée dans le judaïsme". Studies in Religion/Sciences Religieuses 46, nr 1 (28.09.2016): 115–29. http://dx.doi.org/10.1177/0008429816668784.
Pełny tekst źródłaMorin, Michel. "La mort en bas âge d’un privilège : le cas des matériaux spécialement préparés qui n’entrent pas dans la construction d’un immeuble". Revue générale de droit 18, nr 2 (17.04.2019): 361–75. http://dx.doi.org/10.7202/1058705ar.
Pełny tekst źródłaAubertin, Michel, i Richard Simon. "Un critère de rupture multiaxial pour matériaux fragiles". Canadian Journal of Civil Engineering 25, nr 2 (1.04.1998): 277–90. http://dx.doi.org/10.1139/l97-092.
Pełny tekst źródłaGuerin, Françoise. "L'évolution de la place et du sens de la mort dans la tragédie grecque. Du mythe à la littérature". Kentron 10, nr 2 (1994): 79–94. http://dx.doi.org/10.3406/kent.1994.1526.
Pełny tekst źródłaMorais, Jucileia Aparecida da Silva, Luis Maria Bonnecarrère Sanchez, Gilberto Vilmar Kozloski, Lisiane Dorneles de Lima, Luiz Maurício Trevisan, Mônica Vizzotto Reffatti i Rui Luiz Cadorin Júnior. "Digestão do feno de capim-elefante anão (Pennisetum purpureum Schum. cv. Mott) sob diferentes níveis de consumo em ovinos". Ciência Rural 37, nr 2 (kwiecień 2007): 482–87. http://dx.doi.org/10.1590/s0103-84782007000200029.
Pełny tekst źródłaGiampaoli, Michelangelo. "Architectes de leur mort". 2e partie : Pratiques de et vers la fin de vie 45, nr 1-2 (16.11.2021): 135–53. http://dx.doi.org/10.7202/1083798ar.
Pełny tekst źródłaRenn, Nick, i Elaine Wright. "The effect of artificial substrates on the pathogenicity of Steinernema feltiae (Rhabditida: Steinernematidae) to adult Musca domestica (Diptera: Muscidae)". Nematology 2, nr 2 (2000): 217–22. http://dx.doi.org/10.1163/156854100508953.
Pełny tekst źródłaMassamba, Ndiaye, Magnan Jean-Pierre i Cissé Lamine. "Études De Lithostabilisation De La Latérite Avec La Dolérite De Mansadala (Sud-Est Du Sénégal) Pour Une Utilisation En Couche De Base De Chaussée". European Scientific Journal, ESJ 18, nr 11 (31.03.2022): 59. http://dx.doi.org/10.19044/esj.2022.v18n11p59.
Pełny tekst źródłaAlmeida, Edison Xavier de, Gerzy Ernesto Maraschin, Oscar Emilio Ludtke Harthmann, Henrique Mendonça Nunes Ribeiro Filho i Elena Apesteguia Setelich. "Oferta de forragem de capim-elefante anão 'Mott' e o rendimento animal". Revista Brasileira de Zootecnia 29, nr 5 (październik 2000): 1288–95. http://dx.doi.org/10.1590/s1516-35982000000500005.
Pełny tekst źródłaGillison, Gilliam. "Les rêves, la mort et le désir d'immortalité. Une étude des Gimi des Hautes-Terres de Papouasie-Nouvelle-Guinée". Anthropologie et Sociétés 18, nr 2 (10.09.2003): 91–104. http://dx.doi.org/10.7202/015315ar.
Pełny tekst źródłaRozprawy doktorskie na temat "Matériaux de Mott"
Bourassa, Louis. "Transition de Mott et supraconductivité dans les matériaux organiques". Mémoire, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10610.
Pełny tekst źródłaLantz, Gabriel. "Ultrafast electron dynamics in Mott materials". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112014/document.
Pełny tekst źródłaMott insulators are a perfect example of how local electronic correlations can change macroscopic properties of materials. Varying slightly the doping or the pressure can transform a metal to an insulator. These properties can be modified extremely rapidly by driving these materials far from equilibrium. We have investigated the model Mott-Hubbard material Cr-doped V2O3 using state of the art pump-probe techniques, namely angle resolved photoelectron spectroscopy, optical reflectivity, THz time-domain spectroscopy, and X-ray diffraction. We were able to unequivocally disentangle the electronic and the lattice response of the system to a femtosecond laser excitation, which was kept in all cases at a wavelength of 800 nm. We present a comparative study of these transient responses, which demonstrates the strong electron-phonon coupling of this strongly correlated model material. We show that before thermalization, spectral weight is transferred from the lower Hubbard band towards the Mott gap. On a longer time scale a metastable state is stabilized by the lattice structure. To further understand the transient response of Mott insulators, we have also studied another Mott compound, BaCo1-xNixS2. The general trends of photoexcitation in Mott insulators are analyzed using a two orbital model. We argue that the filling of the gap can be due to a change of the specific orbital fillings
Populoh, Sascha. "Investigation of the Mott transition in chromium doped V2 O3 by means of ultrasound and thermopower experiments". Paris 11, 2009. http://www.theses.fr/2009PA112044.
Pełny tekst źródłaThis work presents an experimental study of the high temperature Mott transition in chromium doped V2O3 by means of two different experimental techniques at pressures between ambient pressure and 6 kbar and temperatures from room T to 500 K. Ultrasound measurements as a direct probe of the compressibility were used to estimate the effects of the lattice on the Mott transition. We were able to present the first systematic study of the influence of the lattice degrees of freedom on the high temperature Mott transition in V2O3 and could verify the existence of a critical electronic temperature Telc that differs in the order of 3% or 4% from the temperature of the transition Tc of the bulk sample. Furthermore, observation of the behaviour of the transversal mode of the speed of sound allowed to conclude that this transition occurs without symmetry breaking and the order parameter is a scalar. In the second part the evolution of the Seebeck coefficient was investigated under the same experimental conditions. The studies around the critical point allowed us to establish an experimental phase diagram. Furthermore, we were able to show that the change of the Seebeck coefficient at the Mott transition is driven by the change in the resistivity rather than by the change of the particle-hole symmetry. As a consequence of this we could relate the scaling laws for the critical parameters related to conductivity to our data. In the vicinity of the transition our data were quite well reproduced by the mean field exponents found in the conductivity experiments
Koussir, Houda. "Multiscale study of the electric field induced transition in the Mott phase of GaMo4S8 crystals and TaSe2 monolayers". Electronic Thesis or Diss., Université de Lille (2022-....), 2024. http://www.theses.fr/2024ULILN004.
Pełny tekst źródłaIn the realm of condensed matter physics, Mott insulators are essential for exploring complex electronic phenomena, with significant implications for high-temperature superconductivity and quantum spin liquids. This thesis investigates two types of such materials, distinguished by their dimensionality : GaMo4S8 crystals and monolayer 1T-TaSe2.After presenting their properties in the first chapter, the second chapter addresses the local-scale characterization techniques used to characterize both materials, namely scanning tunneling microscopy and spectroscopy for structural and electronic studies, and multi-tip scanning tunneling microscopy for transport measurements. The latter technique was particularly employed to analyze transport in GaMo4S8. The study then delved into the material response to external electric fields, examining the threshold electric field in relation to the electrode geometry and exploring the temporal evolution of switching times in connection with inter-electrode distances. The achievement of volatile transitions opens prospects for applications such as the operation of a microneuron at room temperature.To enhance the control over phase transition properties of Mott insulators, it is beneficial to consider two-dimensional systems where the current flow is restricted within the crystal plane. The final chapter focuses on the 1T phase of TaSe2, epitaxially grown on gallium phosphide (GaP) semiconductor substrates. Low-temperature scanning tunneling microscopy studies reveal that 1T-TaSe2 monolayers exhibit not only the characteristic charge density modulation (Star of David) of the charge density wave phase but also a unique Moiré pattern due to the monolayer interaction with the GaP substrate. Scanning tunneling spectroscopy has identified a bandgap, hallmark of the Mott insulating state. This state is further substantiated by temperature-dependent transport measurements that show the persistence of the insulating phase up to 400 kelvins. Notably, spectroscopic measurements with varying tip-to-surface distances have unveiled insulator to metal transitions at low temperatures. The observation of such transitions suggests that this large-scale heterostructure could be a material of choice for neuromorphic applications
Brière, Benjamin. "Propriétés optiques de matériaux à fortes corrélations électroniques en conditions extrêmes". Thesis, Tours, 2018. http://www.theses.fr/2018TOUR4020/document.
Pełny tekst źródłaMaterials with strongly correlated electrons belong to the most intriguing systems in condensed matter physics due to their great variety of properties discovered during the last decades such as high temperature superconductivity, molecular conductors and colossal magnetoresistance. During this thesis, two types of strongly correlated materials have been studied: the quadruple perovskite EuCu3fe4Oi2 and the molecular conductors [Au(Et-thiazdt)2J. EuCu3Fe4Oi2 undergoes a metal to insulator transition at low temperature (240K), and [Au(Et-thiazdt)2J goes from a Mott insulator to a correlated metal state under high pressure. Infrared microspectroscopy measurements allowed us to probe the low energy electrodynamic of these systems. Ab-initio calculations were also used to understand the mechanisms of the transitions and the role of electronic correlations in the material
Boissy, Clément. "Transport de matière au sein du film passif : Développement d’une méthodologie sélective corrélant les Point Defect Model et les modèles descriptifs". Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0136.
Pełny tekst źródłaDevelopments in metallic bipolar plate, to apply more widely fuel cells, require an improved of the constitutive material. The use of stainless steel calls for a good understanding of the passive film. The required specifications are for good electrical conductivity and a long life-time. Those two parameters correspond to a correlation between the semiconductive properties and the good corrosion behavior. Nevertheless, the main problems of the passivity lie on the multiplicity of the phenomena that alter the passive film behavior. Numerous models described in the literature can be used to characterize the passivation. The Point Defect Model (PDM) describes the passivation through electrochemical reactions at the metal / oxide and at the oxide / electrolyte interfaces. The reactivity is limited by mass transport through the oxide. From the literature, those phenomena seems to be a discriminating parameter in the choice of a model. The selective method proposed allows us to use each model taking into account their specifics. This methodology is based on the correlation between the mass transport characterization, thanks to the PDM, and the analysis of the Electrochemical Impedance Spectroscopy (EIS). The PDM determines the transport coefficient apart from EIS measurements, so to validate the consideration of the mass transport during the analysis of the electrochemical impedance spectra. The evolution of the main charge carrier density as a function of the oxide formation potential allows us to calculate the transport coefficient from PDM equations. Thanks to the thickness of the oxide (determined by X-ray Photoelectron Spectroscopy), the time constant of the mass transport is determined. Based on this value, a descriptive model is used to analyze the EIS data, avoiding overparametrization. This method is applied first on a model material, pure chromium exposed to acidic solution (pH 2) at several temperatures (30°C and 80°C). It shows that the mass transport has to be taken into account at 80°C and the EIS model considers an inner chromium oxide layer and an outer chromium hydroxide. Secondly, the method is used to characterize an industrial material, AISI 316L stainless steel, at several pH (1, 2 and 3) and at several temperatures (30°C and 80°C). In this case, the oxide is describe as a p-n semiconductor junction with an chromium rich inner layer and an outer iron rich layer. The present methodology permits to deeply characterize the AISI 316L stainless steel. Even if this study concerns the substrate, this step is decisive to improve the performances of the metallic bipolar plates
Devaux, Nicolas. "Étude par Monte Carlo quantique de la transition γ-α du cérium". Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066373/document.
Pełny tekst źródłaThe 4f electrons are strongly localized and their on-site Coulomb repulsion is large compared to bandwidth. Among all lanthanides, cerium is particularly fascinating, due to the strong hybridization with the 6s-6p-5d bands, all present at the Fermi level. The origin of the cerium volume collapse along the isostructural γ-α transition has been a puzzle since its discovery in 1927. Experimentally, pure cerium undergoes the γ-α transition always at finite temperature T. Recently, very accurate X-ray diffraction measurements undoubtedly confirmed the first-order Fm-3m isostructural character of the transition. The first-order line extrapolates to zero-T at negative pressures. The cerium γ-α phase transition is characterized by means of a many-body Jastrow-correlated wave function, which minimizes the variational energy of the first-principles scalar-relativistic Hamiltonian, and includes correlation effects in a non-perturbative way. Our variational ansatz reproduces the structural properties of the two phases, and proves that even at temperature T = 0 K the system undergoes a first order transition, with ab-initio parameters which are seamlessly connected to the ones measured by experiment at finite T. We show that the transition is related to a complex rearrangement of the electronic structure, with key role played by the localisation of t1u orbitals, which tunes the Coulomb repulsion, and the character of the chemical bond
Aeschlimann, Raphaël. "Magnetic and transport properties of rare-earth titanate thin films and heterostructures". Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS142.
Pełny tekst źródłaTransition metal oxides possess a broad range of functionalities (superconductivity, magnetism, ferroelectricity, multiferroicity) stemming from the interplay between structural effects and electronic correlations. Recent work has revealed exciting physics at their interfaces, including conductivity and superconductivity in the two-dimensional electron system (2DES) that forms at the interface between two band insulators, LaAlO₃ and SrTiO₃. However, to embrace the immense potential of oxide interfaces and unveil unprecedented electronic phases, combining insulators with stronger electronic correlations is necessary. At the crossroad between strongly correlated electron physics, magnetism and spintronics, the present thesis project aims to harness electronic and magnetic instabilities in correlated oxides to craft new electronic phases controllable by external stimuli. We investigated rareearth titanates RTiO₃, a relatively unexplored family of Mott insulating perovskites with a crossover between antiferromagnetic and ferromagnetic orders upon changing the rare-earth size. Contrary to most previous works, we focused on ferromagnetic compounds, and their integration in 2DES. The thesis developed along two main axes. First, we explored several members of the rare-earth titanates family in epitaxial thin film form. We highlighted the presence of a magnetically active dead layer at the surface of thin films and established its origin as due to the overoxidation of titanium ions. We also studied the presence of an unexpected orbital moment carried by the titanium in some compounds, and discussed it in the light of the non-collinear spin arrangement promoted by the rare-earth orbital moment and of a structural gradient evidenced by transmission electron microscopy. In a second stage, we combined DyTiO₃ with SrTiO₃ to stabilize a conducting interface with puzzling magnetotransport properties that we interpreted with a model involving spin-orbit coupling as well as induced magnetism
Devaux, Nicolas. "Étude par Monte Carlo quantique de la transition γ-α du cérium". Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066373.
Pełny tekst źródłaThe 4f electrons are strongly localized and their on-site Coulomb repulsion is large compared to bandwidth. Among all lanthanides, cerium is particularly fascinating, due to the strong hybridization with the 6s-6p-5d bands, all present at the Fermi level. The origin of the cerium volume collapse along the isostructural γ-α transition has been a puzzle since its discovery in 1927. Experimentally, pure cerium undergoes the γ-α transition always at finite temperature T. Recently, very accurate X-ray diffraction measurements undoubtedly confirmed the first-order Fm-3m isostructural character of the transition. The first-order line extrapolates to zero-T at negative pressures. The cerium γ-α phase transition is characterized by means of a many-body Jastrow-correlated wave function, which minimizes the variational energy of the first-principles scalar-relativistic Hamiltonian, and includes correlation effects in a non-perturbative way. Our variational ansatz reproduces the structural properties of the two phases, and proves that even at temperature T = 0 K the system undergoes a first order transition, with ab-initio parameters which are seamlessly connected to the ones measured by experiment at finite T. We show that the transition is related to a complex rearrangement of the electronic structure, with key role played by the localisation of t1u orbitals, which tunes the Coulomb repulsion, and the character of the chemical bond
Leriche, Raphaël. "Unconventional superconductivity in quasi-2D materials with strong spin-orbit coupling". Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS577.
Pełny tekst źródłaThe realization of topological superconductors is one of the main current goals of condensed matter physics. It was indeed predicted that such systems should host Majorana fermions. These Majorana fermions possess both a non-Abelian statistics and, because of their topological origin, a certain robustness against local disorder, which makes them attractive for quantum computing applications. One approach likely to lead to topological superconductivity consists in considering superconducting systems with strong spin-orbit coupling and with broken inversion symmetry. It is in this framework that, during this thesis, I performed scanning tunneling microscopy and spectroscopy measurements on quasi-2D materials : (LaSe)1,14(NbSe2)2 and Sr2IrO4. I first studied the electronic properties of misfit compound LaNb2Se5, which is a parent of transition metal dichalcogenide 2H-NbSe2. (LaSe)1,14(NbSe2)2 is a heterostructure made out of alternations of NbSe2 bilayers with trigonal prismatic geometry and LaSe bilayers with rocksalt structure. (LaSe)1,14(NbSe2)2 is a potential candidate for topological superconductivity because of the presence of both a strong spin-orbit coupling and of broken inversion symmetry in NbSe2 planes. Here, I present spectroscopic results showing that the electronic structure of(LaSe)1,14(NbSe2)2 is very similar to the one of electron-doped monolayer NbSe2 with a shift of the chemical potential of 0,3 eV, priorly never reached. I could also demonstrate the quasi- 2D nature of (LaSe)1,14(NbSe2)2 and more particularly the presence of a strong Ising spinorbit coupling. Moreover, the observed weakness of superconductivity against non-magnetic disorder combined with quasiparticle interferences measurements allowed me to exhibit the unconventional nature of (LaSe)1,14(NbSe2)2 superconducting order parameter. This study opens the possibility to use misfit heterostructures such as (LaSe)1,14(NbSe2)2 to study thephysics of transition metal dichalcogenides in the 2D limit, for which many theoretical studies predict topological superconductivity. In this thesis, I also present a study on the effects of doping on the electronic properties of iridate compound Sr2IrO4. Sr2IrO4 is a spin-orbit induced Mott insulator. Because inversion symmetry is locally broken in Sr2IrO4, some theoretical predictions suggest that Sr2IrO4 should turn into a topological superconductor once doped. Here, I exhibit a nanometer-scaleinhomogeneous doping-driven Mott insulator to pseudo-metallic phase transition. This work further justifies the importance of using a local probe such as scanning tunnelling microscopy in order to complete results on Mott physics obtained by integrative methods like angle-resolved photoemission spectroscopy
Książki na temat "Matériaux de Mott"
Iconographie de Mañjuśrī et du mont Wutai en Chine médiévale: Un étude d'après matériaux picturaux de Dunhuang du VIIe au Xe sièle. Shanghai: Shanghai gu ji chu ban she, 2018.
Znajdź pełny tekst źródłaThe "Most Asked Questions About Architecture and Building" (Most Asked Questions about Architecture & Building). Archi-Tech Press, 1993.
Znajdź pełny tekst źródłaMelo, Francisco Dênis, i Edvanir Maia da Silveira. Nas trilhas do sertão: escritos de cultura e política do Ceará – volume 7. SertãoCult, 2022. http://dx.doi.org/10.35260/54210157-2022.
Pełny tekst źródłaCzęści książek na temat "Matériaux de Mott"
Bataille, Philippe. "Le travail de conscientisation du sujet : les malades du cancer et la mort". W Matériaux pour une sociologie de l’individu, 255–75. Presses universitaires du Septentrion, 2005. http://dx.doi.org/10.4000/books.septentrion.54320.
Pełny tekst źródłaFaivre, Xavier. "Les mots pour dire l’argile". W Argiles : De la physique du matériau à l’expérimentation, 70–97. Archaeopress Publishing Ltd, 2023. http://dx.doi.org/10.2307/jj.6914766.10.
Pełny tekst źródłaFaivre, Xavier. "L’argile pour écrire les mots." W Argiles : De la physique du matériau à l’expérimentation, 112–46. Archaeopress Publishing Ltd, 2023. http://dx.doi.org/10.2307/jj.6914766.12.
Pełny tekst źródłaMukařovský, Jan. "Le concept de tout dans la théorie de l’art". W Jan Mukarovsky. Ecrits 1928-1946, 39–48. Editions des archives contemporaines, 2018. http://dx.doi.org/10.17184/eac.1413.
Pełny tekst źródłaFerreira Furtado, Junia. "Uma República de Letras luso-brasileira : a Academia Real da História Portuguesa". W El ocaso del antiguo régimen en los imperios ibéricos, 345–69. Pontificia Universidad Católica del Perú, 2023. http://dx.doi.org/10.18800/9786123172992.013.
Pełny tekst źródłaCorrêa, Iran Carlos Stalliviere, i Lauro Júlio Calliari. "Depósitos Biogênicos de Composição Carbonática". W Recursos Minerais Marinhos. Sociedade Brasileira de Geofísica - SBGf, 2023. http://dx.doi.org/10.22564/sbgfbook.cad5.2023.cap5.
Pełny tekst źródłaBERTUCCI, Marie-Madeleine, i Mounia ILLOURMANNE. "Transcrire un corpus audio dans la perspective de la préservation du patrimoine culturel immatériel." W Corpus audiovisuels, 115–24. Editions des archives contemporaines, 2022. http://dx.doi.org/10.17184/eac.5704.
Pełny tekst źródłaStreszczenia konferencji na temat "Matériaux de Mott"
Zanoaga, Teodor-Florin. "Le français des Sports. Quels enjeux pour la recherche linguistique ? Étude d’un corpus d’articles sur les Jeux olympiques de Tokyo (2021)". W Language for International Communication. University of Latvia Press, 2023. http://dx.doi.org/10.22364/lincs.2023.19.
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