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相关论文: Conductivity of a Weyl semimetal with donor and ac…

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Topological Weyl semimetals represent a novel class of quantum materials that exhibit remarkable properties arising from their unique electronic structure. In this work, we employ state-of-the-art ab initio methods to investigate the role…

材料科学 · 物理学 2025-12-05 Zhe Liu , Shashi B. Mishra , Jae-Mo Lihm , Samuel Poncé , Elena R. Margine

Rare earth compounds display diverse electronic, magnetic, and magneto-transport properties. Recently these compounds of the type RAlGe (R = La, Ce, Pr) have been shown to exhibit Weyl semimetallic behavior. In this work, we have…

We investigate the effect due to background impurities embedded in the region of two-dimensional electron gases to the magnetotransport. These impurities are achieved by homogeneously incorporating Si atoms in single quantum wells of high…

介观与纳米尺度物理 · 物理学 2015-11-26 E. P. Rugeramigabo , L. Bockhorn , R. J. Haug

We present here a simple qualitative model that interpolates between the high and low temperature properties of quasi-1D conductors. At high temperatures we argue that transport is governed by inelastic scattering whereas at low…

无序系统与神经网络 · 物理学 2009-10-30 Ivar Martin , Philip Phillips

Measuring the magnetoconductivity induced from impurities may help determine the impurity distribution and reveal the structure of a Weyl semimetal sample. To verify this, we utilized the Gaussian random disorder to simulate charged…

介观与纳米尺度物理 · 物理学 2023-12-15 Chuan-Xiong Xu , Hao-Ping Yu , Mei Zhou , Xuanting Ji

Weyl semimetals (WSMs), a new type of topological condensed matter, are currently attracting great interest due to their unusual electronic states and intriguing transport properties such as chiral anomaly induced negative…

介观与纳米尺度物理 · 物理学 2018-02-23 Giacomo Resta , Shu-Ting Pi , Xiangang Wan , Sergey Y. Savrasov

We investigate the electronic transport coefficients in unconventional superconductors at low temperatures, where charge and heat transport are dominated by electron scattering from random lattice defects. We discuss the features of the…

超导电性 · 物理学 2011-04-08 Matthias J. Graf

We study the resistivity of three-dimensional semimetals with linear dispersion in the presence of on-site electron-electron interaction. The well-known quadratic temperature dependence of the resistivity of conventional metals is turned…

强关联电子 · 物理学 2021-05-26 Niklas Wagner , Sergio Ciuchi , Alessandro Toschi , Björn Trauzettel , Giorgio Sangiovanni

TaIrTe$_4$ is an example of a candidate Weyl type-II semimetal with a minimal possible number of Weyl nodes. Four nodes are reported to exist a single plane in $k$-space. The existence of a conical dispersion linked to Weyl nodes has yet to…

We have calculated the temperature dependence of the conductance variation ($\delta S(T)$) of mesoscopic superconductor normal metal(S/N) structures, in the diffusive regime, analysing both weak and strong proximity effects. We show that in…

超导电性 · 物理学 2009-10-31 R. Seviour , C. J. Lambert , A. F. Volkov

To investigate the electronic structure of Weyl semimetals Ta$Pn$ ($Pn=$P, As), optical conductivity [$\sigma(\omega)$] spectra are measured over a wide range of photon energies and temperatures, and these measured values are compared with…

We study the transport properties in nodal line semimetals with short-ranged impurity potentials at zero temperature. By computing the Drude conductivity and the corrections from the interference of particle and hole trajectories, we find…

介观与纳米尺度物理 · 物理学 2019-08-26 Hui Yang , Fa Wang

In the Fermi liquid description of metals, electrical and thermoelectric transport coefficients are linked by robust relations which can be challenged by strong interactions or when the electron liquid enters a different regime. These…

介观与纳米尺度物理 · 物理学 2020-05-19 Vicente Arjona , Juan Borge , María A. H. Vozmediano

We theoretically investigate the thermoelectric properties (electronic contribution) of a hybrid structure comprising of an inversion symmetry broken Weyl semimetal (WSM) and intrinsic Weyl superconductor (WSC) with $s$-wave pairing,…

介观与纳米尺度物理 · 物理学 2023-05-31 Ruchi Saxena , Nirnoy Basak , Pritam Chatterjee , Sumathi Rao , Arijit Saha

Searching for the signature of the violation of chiral charge conservation in solids has inspired a growing passion on the magneto-transport in topological semimetals. One of the open questions is how the conductivity depends on magnetic…

介观与纳米尺度物理 · 物理学 2016-06-01 Song-Bo Zhang , Hai-Zhou Lu , Shun-Qing Shen

We calculate the surface dc conductivity of Weyl semimetals and show that it contains an anomalous contribution in addition to a Drude contribution from the Fermi arc. The anomalous part is independent of the surface scattering time, and…

介观与纳米尺度物理 · 物理学 2022-12-23 Hridis K. Pal , Osakpolor Eki Obakpolor , Pavan Hosur

In this work, the near-field radiative heat transfer (NFRHT) between two Weyl semimetal (WSM) nanoparticles (NPs) is investigated. The numerical results show that negative differential thermal conductance (NDTC) effect can be obtained in…

介观与纳米尺度物理 · 物理学 2022-09-07 Yasong Sun , Yang Hu , Kezhang Shi , Jihong Zhang , Dudong Feng , Xiaohu Wu

We study the conductivity of a 3D disordered metal close to the antiferromagnetic instability within the framework of the spin-fermion model using the diagrammatic technique. We calculate the interaction correction $\delta\sigma(\omega,T)$…

强关联电子 · 物理学 2013-05-30 S. V. Syzranov , J. Schmalian

We analyze the effect of the tilt on the transverse thermoelectric coefficient of Weyl semimetals in the \emph{conformal} limit, i.e., zero temperature and zero chemical potential. Using the Kubo formalism, we find a nonmonotonic behavior…

介观与纳米尺度物理 · 物理学 2023-01-18 Thorvald M. Ballestad , Alberto Cortijo , María A. H. Vozmediano , Alireza Qaiumzadeh

Recent observation of quantum transport phenomena of Weyl fermions has brought much attention to 4d ferromagnetic perovskite SrRuO3 as a magnetic Weyl semimetal. Besides, the hump-like Hall effect anomaly, which might have a topological…