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相关论文: Unconventional thermoelectric transport in tilted …

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In a recent work, a contribution to the Nernst current of a Dirac or Weyl semimetal coming from the conformal anomaly was reported. Being originated from an anomaly - a vacuum contribution -, a non-zero transport coefficient was predicted…

介观与纳米尺度物理 · 物理学 2019-06-19 Vicente Arjona , Maxim N. Chernodub , María A. H. Vozmediano

The thermoelectric transport coefficients are calculated in a generic lattice model of multi-Weyl semimetals with a broken time-reversal symmetry by using the Kubo's linear response theory. The contributions connected with the Berry…

介观与纳米尺度物理 · 物理学 2017-11-01 E. V. Gorbar , V. A. Miransky , I. A. Shovkovy , P. O. Sukhachov

Weyl semimetals host linear energy dispersions around Weyl nodes, as well as monopoles of Berry curvature in momentum space around these points. These features give rise to unique transport signatures in a Weyl semimetal, such as transverse…

介观与纳米尺度物理 · 物理学 2019-06-19 Robert C. McKay , Timothy M. McCormick , Nandini Trivedi

We explore the thermoelectric transport properties of a coexistence topological semimetal, characterized by the presence of both a pair of Weyl points and a nodal ring in the quantum limit. This system gives rise to complex Landau bands…

介观与纳米尺度物理 · 物理学 2024-03-12 L. W. Guo , C. M. Wang

In a recent paper [R. Soto-Garrido and E. Mu\~noz, J. Phys. Condens. Matter 30, 195302 (2018)], we studied the electronic transport properties in Weyl semimetals (WSMs) submitted to the combined effects of torsional mechanical strain and…

介观与纳米尺度物理 · 物理学 2018-12-07 Enrique Muñoz , Rodrigo Soto-Garrido

We study the electronic contribution to the thermal conductivity and the thermopower of Weyl and Dirac semimetals using a semiclassical Boltzmann approach. We investigate the effect of various relaxation processes including disorder and…

强关联电子 · 物理学 2014-10-16 Rex Lundgren , Pontus Laurell , Gregory A. Fiete

Quantum anomalies in Weyl semimetal (for either ${\bf E}\cdot{\bf B} \neq 0$ or ${\bf \nabla}T\cdot{\bf B} \neq 0$) leads to chiral charge and energy pumping between the opposite chirality nodes. This results in chiral charge and energy…

介观与纳米尺度物理 · 物理学 2020-02-05 Kamal Das , Amit Agarwal

Berry curvature in Weyl semimetals results in very intriguing magneto-electric and magneto-thermal transport properties. In this paper, we explore the impact of the tilting of the Weyl nodes, which breaks the time-reversal symmetry, on the…

介观与纳米尺度物理 · 物理学 2019-02-13 Kamal Das , Amit Agarwal

We study electric field and temperature gradient driven magnetoconductivity of a Weyl semimetal system. To analyze the responses, we utilize the kinetic equation with semiclassical equations of motion modified by the Berry curvature and…

介观与纳米尺度物理 · 物理学 2021-02-16 Vladimir A. Zyuzin

Weyl semimetals possess low energy excitations which act as monopoles of Berry curvature in momentum space. These emergent monopoles are at the heart of the extensive novel transport properties that Weyl semimetals exhibit. The singular…

介观与纳米尺度物理 · 物理学 2017-12-20 Timothy M. McCormick , Robert C. McKay , Nandini Trivedi

We study the anomalous Nernst and thermal Hall effects in a linearized low-energy model of a tilted Weyl semimetal, with two Weyl nodes separated in momentum space. For inversion symmetric tilt, we give analytic expressions in two opposite…

介观与纳米尺度物理 · 物理学 2017-11-22 Yago Ferreiros , A. A. Zyuzin , Jens H. Bardarson

Charge transport of topological semimetals has been in the focus of intensive investigations because of their non-trivial band topology. Heat transport of these materials, on the other hand, is largely unexplored and remains elusive. Here…

Weyl semimetals (WSM) exhibit chiral anomaly in their magnetotransport due to broken conservation laws. Here, we analyze the magnetotransport of WSM in the presence of the time-reversal symmetry-breaking tilt parameter. The analytical…

介观与纳米尺度物理 · 物理学 2019-12-02 Anirban Kundu , Hyunsoo Yang , M. B. A. Jalil

We present a theory of thermoelectric transport in weakly disordered Weyl semimetals where the electron-electron scattering time is faster than the electron-impurity scattering time. Our hydrodynamic theory consists of relativistic fluids…

强关联电子 · 物理学 2016-08-31 Andrew Lucas , Richard A. Davison , Subir Sachdev

We show that a conformal anomaly in Weyl/Dirac semimetals generates a bulk electric current perpendicular to a temperature gradient and the direction of a background magnetic field. The associated conductivity of this novel contribution to…

强关联电子 · 物理学 2018-05-17 M. N. Chernodub , A. Cortijo , M. A. H. Vozmediano

The spin Nernst effect describes a transverse spin current induced by the longitudinal thermal gradient in a system with the spin-orbit coupling. Here we study the spin Nernst effect in a mesoscopic four-terminal cross-bar Weyl semimetal…

介观与纳米尺度物理 · 物理学 2019-08-27 Ning-Xuan Yang , Yan-Feng Zhou , Zhe Hou , Qing-Feng Sun

We study transport in three dimensional Weyl semimetals with N isotropic Weyl nodes in the presence of Coulomb interactions or disorder at temperature T. In the interacting clean limit, we determine the conductivity by solving a quantum…

强关联电子 · 物理学 2012-01-26 Pavan Hosur , S. A. Parameswaran , Ashvin Vishwanath

The chiral magnetic effect is a one of the exotic bulk transport properties of the Weyl semimetals. Because of the Nielsen-Ninomiya "no-go theorem", the total chiral magnetic current is absent in the equilibrium state. One of the mechanisms…

强关联电子 · 物理学 2020-01-08 Zaur Z. Alisultanov

Weyl semimetals, with their unique electronic band structure, have drawn significant interest for their potential to explore quantum anomalies in condensed matter systems. In this study, we investigate the large positive magneto-thermal…

Berry curvature acts analogous to a magnetic field in the momentum-space, and it modifies the flow of charge carriers and entropy. This induces several intriguing magnetoelectric and magnetothermal transport phenomena in Weyl semimetals. %,…

介观与纳米尺度物理 · 物理学 2019-08-14 Kamal Das , Amit Agarwal
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