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We demonstrate that forward electron-electron scattering due to Coulomb interation in a two-dimensional ballistic electron gas leads to the (T\ln {T})^{-1} temperature dependence of the thermal conductivity, which is logarithmically…

介观与纳米尺度物理 · 物理学 2007-05-23 A. O. Lyakhov , E. G. Mishchenko

Temperature dependent transport of disordered electronic systems is examined in the presence of strong correlations. In contrast to what is assumed in Fermi liquid approaches, finite temperature behavior in this regime proves largely…

强关联电子 · 物理学 2007-05-23 M. C. O. Aguiar , E. Miranda , V. Dobrosavljevic , E. Abrahams , G. Kotliar

We consider transport of dilute two-dimensional electrons, with temperature between Fermi and Debye temperatures. In this regime, electrons form a nondegenerate plasma with mobility limited by potential disorder. Different kinds of…

介观与纳米尺度物理 · 物理学 2009-06-11 D. S. Novikov

We calculate the temperature dependence of the transport properties of heavy-fermion systems such as resistivity, optical conductivity, thermoelectric power, the electronic part of the thermal conductivity, and the "figure of merit." The…

强关联电子 · 物理学 2009-11-11 Claas Grenzebach , Frithjof B. Anders , Gerd Czycholl , Thomas Pruschke

Linear temperature dependence of transport coefficients in metals is often ascribed to non-Fermi-liquid physics. Here we demonstrate the $T$-linear behavior of nonlocal conductivity in a clean 2D electron fluid, where carrier collisions…

介观与纳米尺度物理 · 物理学 2025-02-11 Serhii Kryhin , Qiantan Hong , Leonid Levitov

The finite-temperature transport properties of FeRh compounds are investigated by first-principles Density Functional Theory-based calculations. The focus is on the behavior of the longitudinal resistivity with rising temperature, which…

Localization and dephasing of conduction electrons in a low carrier density ferromagnet due to scattering on magnetic fluctuations is considered. We claim the existence of the "mobility edge", which separates the states with fast diffusion…

强关联电子 · 物理学 2009-10-31 Eugene Kogan , Mark Auslender , Moshe Kaveh

We investigate the electronic structure of tungsten ditelluride (WTe$_2$) flakes with different thicknesses in magneto-transport studies. The temperature-dependent resistance and magnetoresistance (MR) measurements both confirm the breaking…

材料科学 · 物理学 2021-10-27 Xurui Zhang , Vivek Kakani , John M. Woods , Judy J. Cha , Xiaoyan Shi

A possible origin of unusual temperature behavior of transport coefficients observed in densely packed polycrystalline CaAl_{2} compound [M. Ausloos et al., J. Appl. Phys. 96, 7338 (2004)] is discussed, including a power-like dependence of…

材料科学 · 物理学 2007-05-23 S. Sergeenkov , F. M. Araujo-Moreira

Electronic properties of the Si(111)-$7\times 7$ surface are studied using four- and two-probe conductivity measurements and tunneling spectroscopy. We demonstrate that the temperature dependence of the surface conductivity corresponds to…

强关联电子 · 物理学 2015-12-07 A. B. Odobescu , A. A. Maizlakh , S. V. Zaitsev-Zotov

We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl…

强关联电子 · 物理学 2009-11-10 F. Rivadulla , J. -S. Zhou , J. B. Goodenough

Direct electronic structure measurements of a variety of the colossal magnetoresistive oxides show the presence of a pseudogap at the Fermi energy E_F which drastically suppresses the electron spectral function at E_F. The pseudogap is a…

强关联电子 · 物理学 2016-08-31 T. Saitoh , D. S. Dessau , Y. Moritomo , T. Kimura , Y. Tokura , N. Hamada

The resistivity around the ferromagnetic transition temperature in the double exchange model is studied by the Schwinger boson approach. The spatial spin correlation responsible for scattering of conduction electrons are taken into account…

强关联电子 · 物理学 2007-05-23 Satoshi Ishizaka , Sumio Ishihara

We introduce a generic Froehlich-Coulomb model of the oxides, which also includes infinite on-site (Hubbard) repulsion, and describe a simple analytical method of solving the multi-polaron problem in complex lattice structures. Two…

超导电性 · 物理学 2009-11-07 A. S. Alexandrov , P. E. Kornilovitch

We study the temperature dependence of the electrical resistivity of interacting two-dimensional metallic systems. We perform a numerical simulation of the nonequilibrium state based on semiclassical Boltzmann transport theory. Through our…

强关联电子 · 物理学 2013-12-24 Jonathan M. Buhmann

We have studied temperature- and electric-field dependent carrier transport in single flakes of MoS$_{2}$ treated with n-butyllithium. The temperature dependence of the four-terminal resistance follows the Efros-Shklovskii variable range…

介观与纳米尺度物理 · 物理学 2018-01-17 Nikos Papadopoulos , Gary A. Steele , Herre S. J. van der Zant

Through the motivation of the recent discovery of dispersionless regions in the band structure of the delafossites, a model density of states of free fermions including a discontinuity as analytical anomaly is studied. The resulting…

材料科学 · 物理学 2011-12-15 Stefan Kremer , Raymond Frésard

The chiral helimagnet, $Cr_{1/3}NbS_{2}$, hosts exotic spin textures, whose influence on the magneto-transport properties, make this material an ideal candidate for future spintronic applications. To date, the interplay between macroscopic…

We consider a transmission of electrons through a two-dimensional ballistic point contact in the low-conductance regime below the 0.7-anomaly. The scattering of electrons by Friedel oscillations of charge density results in a contribution…

介观与纳米尺度物理 · 物理学 2013-01-10 Tatiana Krishtop , Kirill Nagaev

A theoretical approach with a microscopic model is proposed for the observed "high temperature superconductivity" in the Iron-based compounds. The above scheme takes into account two important aspects viz. (i) superconducting transition…

超导电性 · 物理学 2009-01-13 Ranjan Chaudhury
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