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We present low-temperature heat and charge transport as well as caloric properties of a ThAsSe single crystal. An extra -AT1/2 term in the electrical resistivity, independent of magnetic fields as high as 14 T, provides evidence for an…

Systems near to quantum critical points show universal scaling in their response functions. We consider whether this scaling is reflected in their fluctuations; namely in current-noise. Naive scaling predicts low-temperature Johnson noise…

强关联电子 · 物理学 2009-11-11 A. G. Green , J. E. Moore , S. L. Sondhi , A. Vishwanath

Using the Keldysh Green function technique, we calculate the finite-frequency correlator between the electrical current and the heat current flowing through a quantum dot connected to reservoirs. At equilibrium, we find that this quantity,…

介观与纳米尺度物理 · 物理学 2016-11-17 Paul Eyméoud , Adeline Crépieux

We discuss how phase coherence manifests in the heat transport through superconducting single and multichannel Josephson junctions in time dependent situations. We consider the heat current driven through the junction by a temperature…

超导电性 · 物理学 2015-03-02 P. Virtanen , F. Giazotto

We present a study of electrical and thermal transport in Weyl semimetal WTe$_2$ down to 0.3 K. The Wiedemann-Franz law holds below 2 K and a downward deviation starts above. The deviation is more pronounced in cleaner samples, as expected…

介观与纳米尺度物理 · 物理学 2024-08-26 Wei Xie , Feng Yang , Liangcai Xu , Xiaokang Li , Zengwei Zhu , Kamran Behnia

We present a microscopic theory of heat and particle transport of an interacting, low temperature Bose-Einstein condensate in a quantum point contact. We show that, in contrast to charged, fermionic superconductors, bosonic systems feature…

量子气体 · 物理学 2020-06-05 Shun Uchino , Jean-Philippe Brantut

We examine the nature of the transitions between the normal and the superconducting branches of superconductor-graphene-superconductor Josephson junctions. We attribute the hysteresis between the switching (superconducting to normal) and…

介观与纳米尺度物理 · 物理学 2013-08-09 I. V. Borzenets , U. C. Coskun , H. T. Mebrahtu , Yu. V. Bomze , A. I. Smirnov , G. Finkelstein

The thermal transport across metal-insulator interface can be characterized by electron-phonon interaction through which an electron lead is coupled to a phonon lead if phonon-phonon coupling at the interface is very weak. We investigate…

材料科学 · 物理学 2013-10-17 Lifa Zhang , Jing-Tao Lü , Jian-Sheng Wang , Baowen Li

Phonon heat transport in mesoscopic systems is investigated using methods analogous to the Landauer description of electrical conductance. A "universal heat conductance" expression that depends on the properties of the conducting pathway…

介观与纳米尺度物理 · 物理学 2009-10-31 D. E. Angelescu , M. C. Cross , M. L. Roukes

The measurement of higher order cumulants of the current noise generated by a nonlinear mesoscopic conductor using a Josephson junction as on-chip detector is investigated theoretically. The paper addresses the regime where the noise of the…

介观与纳米尺度物理 · 物理学 2008-05-16 Hermann Grabert

The Boltzmann transport equation for phonons is recast directly in terms of the heat-flux by means of iteration followed by truncation at the second order in the spherical harmonic expansion of the distribution function. This procedure…

介观与纳米尺度物理 · 物理学 2015-10-28 Ashok T. Ramu , John E. Bowers

We investigate the thermodynamic behavior of open quantum systems through the Hamiltonian of Mean Force, focusing on two models: a two-qubit system interacting with a thermal bath and a Jaynes-Cummings Model without the rotating wave…

量子物理 · 物理学 2025-09-03 Neha Pathania , Devvrat Tiwari , Subhashish Banerjee

We study the thermal conductivity of the disordered two-dimensional electron gas. To this end we analyze the heat density-heat density correlation function concentrating on the scattering processes induced by the Coulomb interaction in the…

介观与纳米尺度物理 · 物理学 2016-03-23 G. Schwiete , A. M. Finkel'stein

We present a general nonequilibrium Green's function formalism for modeling heat transfer in systems characterized by linear response that establishes the formal algebraic relationships between phonon and radiative conduction, and reveals…

We show that 1/f noise in a two-dimensional electron gas with hopping conduction can be explained by the modulation of conducting paths by fluctuating occupancy of non-conducting states. The noise is sensitive to the structure of the…

介观与纳米尺度物理 · 物理学 2009-11-07 V. Pokrovskii , A. K. Savchenko , W. R. Tribe , E. H. Linfield

To investigate the initial process of Joule heating in semiconductors microscopically and quantitatively, we developed a theoretical framework for the ab initio evaluation of the carrier energy relaxation in semiconductors under a high…

材料科学 · 物理学 2021-08-25 Emi Minamitani

We calculate the rate of heating through phonon excitation implied by the noise postulated in mass-proportional-coupled collapse models, for a general noise power spectrum. For white noise with reduction rate $\lambda$, the phonon heating…

量子物理 · 物理学 2018-05-23 Stephen L. Adler

We theoretically study the behavior of the critical current of a thermally-biased tunnel Josephson junction with a particular design, in which the electrodes of the junction are enclosed in two different superconducting loops pierced by…

超导电性 · 物理学 2022-07-20 Claudio Guarcello , Roberta Citro , Francesco Giazotto , Alessandro Braggio

The properties of the thermal force driving micron particles in incompressible fluids are studied within the hydrodynamic theory of the Brownian motion. It is shown that the assumption used for the hydrodynamic Langevin equation in its…

统计力学 · 物理学 2012-10-16 Vladimir Lisy , Jana Tothova , Lukas Glod

We show that for any liquid or solid with strong correlation between its $NVT$ virial and potential-energy equilibrium fluctuations, the temperature is a product of a function of excess entropy per particle and a function of density,…

软凝聚态物质 · 物理学 2012-03-13 Trond S. Ingebrigtsen , Lasse Bøhling , Thomas B. Schrøder , Jeppe C. Dyre