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We study the thermal transport properties of three CaF$_{2}$ polymorphs up to a pressure of 30 GPa using first-principle calculations and an interatomic potential based on machine learning. The lattice thermal conductivity $\kappa$ is…

材料科学 · 物理学 2022-01-02 Somayeh Faraji , S. Mehdi Vaez Allaei , Maximilian Amsler

We study one-dimensional hardcore lattice gases, with nearest-neighbor interactions, in the presence of an external potential barrier, that moves on the periodic lattice with a constant speed. We investigate how the nature of the…

统计力学 · 物理学 2023-04-14 Deepsikha Das , Punyabrata Pradhan , Sakuntala Chatterjee

We present a study of electric transport at high temperature in a model of strongly interacting spinless fermions without disorder. We use exact diagonalization to study the statistics of the energy eigenvalues, eigenstates, and the matrix…

强关联电子 · 物理学 2009-11-11 Subroto Mukerjee , Vadim Oganesyan , David Huse

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

We investigate the properties of a harmonic chain in contact with a thermal bath at one end and subjected, at its other end, to a periodic force. The particles also undergo a random velocity reversal action, which results in a finite heat…

数学物理 · 物理学 2023-03-01 Tomasz Komorowski , Joel L. Lebowitz , Stefano Olla

We use low energy optical spectroscopy and first principles LDA+DMFT calculations to test the hypothesis that the anomalous transport properties of strongly correlated metals originate in the strong temperature dependence of their…

强关联电子 · 物理学 2014-12-09 Xiaoyu Deng , Aaron Sternbach , Kristjan Haule , D. N. Basov , Gabriel Kotliar

Nonreciprocal transport phenomena indicate that the forward and backward flows differ, and are attributed to broken inversion symmetry. In this paper, we study the nonreciprocity of a thermal and thermoelectric transport of electronic…

介观与纳米尺度物理 · 物理学 2019-03-13 Ryota Nakai , Naoto Nagaosa

Heat transport is a fundamental property of all physical systems and can serve as a fingerprint identifying different states of matter. In a normal liquid a hot spot diffuses while in a superfluid heat propagates as a wave called second…

We reveal interesting universal transport behavior of ordered one-dimensional fermionic systems with power-law hopping. We restrict ourselves to the case where the power-law decay exponent $\alpha>1$, so that the thermodynamic limit is…

介观与纳米尺度物理 · 物理学 2020-01-08 Madhumita Saha , Archak Purkayastha , Santanu K. Maiti

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

Heat transport in open quantum systems is particularly susceptible to the modeling of system-reservoir interactions. It thus requires to consistently treat the coupling between a quantum system and its environment. While perturbative…

统计力学 · 物理学 2017-06-07 Thomas Motz , Joachim Ankerhold , Jürgen T. Stockburger

In this review paper we aim at illustrating recent achievements in anomalous heat diffusion, while highlighting open problems and research perspectives. We briefly recall the main features of the phenomenon for low-dimensional classical…

统计力学 · 物理学 2020-09-18 Giuliano Benenti , Stefano Lepri , Roberto Livi

We study heat and charge transport through a normal diffusive wire coupled with a superconducting wire over the region smaller than the coherence length. Due to partial Andreev reflection of quasiparticles from the interface, the subgap…

超导电性 · 物理学 2014-12-03 E. V. Bezuglyi , V. Vinokur

We study the low-temperature transport properties of out-of-equilibrium XXZ spin-$1/2$ chains. We consider the protocol where two semi-infinite chains are prepared in two thermal states at small but different temperatures and suddenly…

统计力学 · 物理学 2018-03-29 Bruno Bertini , Lorenzo Piroli

There has been much interest in semiconductor superlattices because of showing very low thermal conductivities. This makes them especially suitable for applications in a variety of devices for thermoelectric generation of energy, heat…

统计力学 · 物理学 2020-02-06 Federico Vázquez , Péter Ván , Róbert Kovács

We study thermal and electrical transport in metals and superconductors near a quantum phase transition where antiferromagnetic order disappears. The same theory can also be applied to quantum phase transitions involving the loss of certain…

强关联电子 · 物理学 2017-08-07 Shubhayu Chatterjee , Subir Sachdev , Andreas Eberlein

Thermopower and electrical resistivity measurements transverse to the conducting chains of the quasi-one-dimensional metal Li(0.9)Mo(6)O(17) are reported in the temperature range 5 K <= T <= 500 K. For T>= 400 K the interchain transport is…

材料科学 · 物理学 2015-06-19 J. L. Cohn , S. Moshfeghyeganeh , C. A. M. dos Santos , J. J. Neumeier

We report, for the first time, the observation of ballistic thermal transport in a nonintegrable classical many-body system. This claim is substantiated by appropriately incorporating long-range interactions into the system, which exhibits…

统计力学 · 物理学 2024-02-06 Jianjin Wang , Daxing Xiong

The low-temperature kinetics of the strongly correlated electron liquid inhabiting a solid is analyzed. It is demonstrated that a softly damped branch of transverse zero sound emerges when several bands cross the Fermi surface…

强关联电子 · 物理学 2010-10-22 V. A. Khodel , J. W. Clark , M. V. Zverev

Energy transport in one-dimensional chains of particles with three conservation laws is generically anomalous and belongs to the Kardar-Parisi-Zhang dynamical universality class. Surprisingly, some examples where an apparent normal heat…

统计力学 · 物理学 2020-09-16 Stefano Lepri , Roberto Livi , Antonio Politi