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The physics of non-zero temperature dynamics and transport near quantum-critical points is discussed by a detailed study of the O(N)-symmetric, relativistic, quantum field theory of a N-component scalar field in $d$ spatial dimensions. A…

强关联电子 · 物理学 2025-09-08 Subir Sachdev

In this study we used nonequilibrium simulation method to investigate the temperature dependent divergence of thermal conductivity in one dimensional momentum conserving system with asymmetric double well nearest-neighbor interaction…

统计力学 · 物理学 2019-02-06 Archana G R , Debashis Barik

By classical and path-integral molecular dynamics simulations, we study the pressure-temperature ($P$-$T$) phase diagram of LaH$_{10}$ to clarify the impact of temperature and atomic zero-point motions. We calculate the XRD pattern and…

超导电性 · 物理学 2022-05-31 Yuta Watanabe , Takuya Nomoto , Ryotaro Arita

Using single-crystal transistors, we have performed a systematic experimental study of electronic transport through oxidized copper/rubrene interfaces as a function of temperature and bias. We find that the measurements can be reproduced…

材料科学 · 物理学 2009-11-13 A. S. Molinari , I. Gutierrez Lezama , P. Parisse , T. Takenobu , Y. Iwasa , A. F. Morpurgo

We have developed a theoretical formalism to introduce temperature as a parameter into the framework of non-relativistic quantum mechanics using the laws of classical thermodynamics and the canonical ensemble scheme of statistical…

量子物理 · 物理学 2021-03-08 Ashkan Shekaari , Mahmoud Jafari

In a Quark-Gluon Plasma (QGP), the fundamental building blocks of matter, quarks and gluons, are under extreme conditions of temperature and density. A QGP could exist in the early stages of the Universe, and in various objects and events…

核实验 · 物理学 2024-02-06 STAR Collaboration

Using the nonequilibrium Green's function (NEGF) formalism, we propose a microscopic theory for near-field heat transfer between charged metal plates focusing on the Coulomb interactions. Tight-binding models for the electrons are coupled…

介观与纳米尺度物理 · 物理学 2017-06-21 Jian-Sheng Wang , Jiebin Peng

A numerical renormalization-group survey of the zero-bias electrical conductance through a quantum dot embedded in the conduction path of a nanodevice is reported. The results are examined in the light of a recently derived linear mapping…

介观与纳米尺度物理 · 物理学 2010-01-13 Makoto Yoshida , Antonio C. Seridonio , Luiz N. Oliveira

We employ an Einstein-Maxwell-Dilaton (EMD) holographic model, which is known to be in good agreement with lattice results for the QCD equation of state with $(2+1)$ flavors and physical quark masses, to investigate the temperature and…

高能物理 - 唯象学 · 物理学 2017-08-01 Romulo Rougemont , Renato Critelli , Jacquelyn Noronha-Hostler , Jorge Noronha , Claudia Ratti

Simulation of transport properties of confined, low-dimensional fluids can be performed efficiently by means of Multi-Particle Collision (MPC) dynamics with suitable thermal-wall boundary conditions. We illustrate the effectiveness of the…

统计力学 · 物理学 2025-03-12 Rongxiang Luo , Stefano Lepri

We develop a theory of thermal transport of weakly interacting electrons in quantum wires. Unlike higher-dimensional systems, a one-dimensional electron gas requires three-particle collisions for energy relaxation. The fastest relaxation is…

介观与纳米尺度物理 · 物理学 2015-05-30 Alex Levchenko , Tobias Micklitz , Zoran Ristivojevic , K. A. Matveev

Charge transfer is a fundamental process that underlies a multitude of phenomena in chemistry and biology. Recent advances in observing and manipulating charge and heat transport at the nanoscale, and recently developed techniques for…

介观与纳米尺度物理 · 物理学 2016-07-26 Galen T. Craven , Abraham Nitzan

A system with equal number of positive and negative charges confined in a box with a small but finite thickness is modeled as a function of temperature using mesoscale numerical simulations, for various values of the charges. The Coulomb…

软凝聚态物质 · 物理学 2023-01-09 A. Gama Goicochea , Z. Nussinov

We find the charge and heat currents caused by a temperature difference applied to a superconducting point contact or to a quantum point contact between a superconducting and normal conductors. The results are formulated in terms of the…

介观与纳米尺度物理 · 物理学 2019-04-24 Sergey S. Pershoguba , Leonid I. Glazman

We demonstrate the possiblity to cool nanoelectronic systems in nonequilibrium situations by increasing the temperature of the environment. Such cooling by heating is possible for a variety of experimental conditions where the relevant…

介观与纳米尺度物理 · 物理学 2018-08-15 R. Härtle , C. Schinabeck , M. Kulkarni , D. Gelbwaser-Klimovsky , M. Thoss , U. Peskin

A recent experiment [Cohen et al., Science 382, 542 (2023)] observed a robustly quantized $e^2/2h$ conductance in a quantum point contact between fractional quantum Hall edges (a quantum Hall transformer), which then vanishes at low…

介观与纳米尺度物理 · 物理学 2026-01-23 Stuart Yi-Thomas , Jay D. Sau

Apart from usual quantization steps on the ballistic conductance of a quasi-one-dimensional conductor, an additional plateau-like feature appears at a fraction of about 0.7 below the first conductance step in GaAs-based quantum point…

介观与纳米尺度物理 · 物理学 2016-07-08 Tadeusz Figielski

Quantum thermodynamics defines the ideal quantum thermoelectric, with maximum possible efficiency at finite power output. However, such an ideal thermoelectric is challenging to implement experimentally. Instead, here we consider two types…

介观与纳米尺度物理 · 物理学 2026-04-13 Chaimae Chrirou , Abderrahim El Allati , Robert S Whitney

We investigate integer and fractional quantum Hall states in quantum point contacts (QPCs) of different geometries, defined in AlGaAs/GaAs heterostructures employing different doping and screening techniques. We find that, even in the…

介观与纳米尺度物理 · 物理学 2014-03-11 S. Baer , C. Rössler , E. C. de Wiljes , P. -L. Ardelt , T. Ihn , K. Ensslin , C. Reichl , W. Wegscheider

We show that the coherent mixing of different transverse modes, due to forward scattering of carriers by soft impurity- or boundary potentials leads to a nonlinear, asymmetric current response of quantum point contacts (QPC). The…

凝聚态物理 · 物理学 2009-10-22 A. M. Zagoskin , R. I. Shekhter