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Weyl semimetals are a topological phase of matter that have drawn recent interest and have been suggested as a possible phase of the pyrochlore irridates, among other materials. Here, we compute the magneto-optical response of an isolated…

Mesoscale and Nanoscale Physics · Physics 2013-06-28 Phillip E. C. Ashby , J. P. Carbotte

Multi-Weyl semimetals are new types of Weyl semimetals which have anisotropic non-linear energy dispersion and a topological charge larger than one, thus exhibiting a unique quantum response. Using a unified lattice model, we calculate the…

Mesoscale and Nanoscale Physics · Physics 2017-05-03 Seongjin Ahn , E. J. Mele , Hongki Min

We study the second-order optical response of Weyl semimetals in the presence of a magnetic field. We consider an idealized model of a perfectly linear Weyl node and use the Kubo formula at zero temperature to calculate the intrinsic…

Mesoscale and Nanoscale Physics · Physics 2024-01-09 Grigory Bednik , Vladyslav Kozii

Exotic topological and transport properties of Weyl semimetals generated a lot of excitement in the condensed matter community. Here we show that Weyl semimetals in a strong magnetic field are highly unusual optical materials. The…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Zhongqu Long , Yongrui Wang , Maria Erukhimova , Mikhail Tokman , Alexey Belyanin

Weyl semimetals are predicted to host signature magneto-optical properties sourced by their peculiar Landau level structure, including the chiral level. Analytical studies are often leaving out the Hall component of the conductivity due to…

Mesoscale and Nanoscale Physics · Physics 2024-02-15 Marcus Stålhammar

We study the effects of anisotropy on the magnetoresistance of Weyl semimetals (WSMs) in the ultraquantum regime. We utilize the fact that many Weyl semimetals are approximately axially anisotropic. We find that anisotropy manifests itself…

Mesoscale and Nanoscale Physics · Physics 2025-02-04 A. S. Dotdaev , Ya. I. Rodionov , K. I. Kugel , B. A. Aronzon

Magneto-optical conductivity is a very widely studied transport coefficient, useful to understand and characterize the behaviour of materials under magnetic fields. Using the Kubo formula, we compute the components of the conductivity…

Mesoscale and Nanoscale Physics · Physics 2023-03-07 Shivam Yadav , Sajid Sekh , Ipsita Mandal

Type-II Weyl semimetals are characterized by the tilted linear dispersion in the low-energy excitations, mimicking Weyl fermions but with manifest violation of the Lorentz invariance, which has intriguing quantum transport properties. The…

Mesoscale and Nanoscale Physics · Physics 2018-05-30 Yi-Wen Wei , Chao-Kai Li , Jingshan Qi , Ji Feng

We present a theoretical investigation of the electronic band structure and optical properties of a two-dimensional anisotropic semimetal that is described by a tilted semi-Dirac type spectrum with a pair of Weyl nodes. We observe that a…

Mesoscale and Nanoscale Physics · Physics 2025-08-13 Suheel Ahmad Malik , M. A. H. Ahshan , SK Firoz Islam

Magnetotransport and magneto-optics experiments offer a very powerful probe for studying the physical properties of materials. Here, we investigate the second-order nonlinear magnetoconductivity of tilted type-I Weyl and multi-Weyl…

Mesoscale and Nanoscale Physics · Physics 2022-06-22 Sunit Das , Kamal Das , Amit Agarwal

The popularity of graphene--a pseudospin-1/2 two-dimensional Dirac-Weyl material--has prompted the search for related materials and the characterization of their properties. In this work, the magneto-optical conductivity is calculated for…

Mesoscale and Nanoscale Physics · Physics 2014-07-10 John D. Malcolm , Elisabeth J. Nicol

The magneto-optical transport of gapless type-I tilted single Weyl semimetals(WSMs) exhibits suppression of total magnetoconductivities in the presence of orbital magnetic moment(OMM) in linear and nonlinear responses (Yang Gao et al.,…

Strongly Correlated Electrons · Physics 2026-05-12 Panchlal Prabhat , Amit Gupta

Magneto-optical studies of Weyl semimetals have been proposed as a versatile tool for observing low-energy Weyl fermions in candidate materials including the chiral Landau level. However, previous theoretical results have been restricted to…

Mesoscale and Nanoscale Physics · Physics 2020-12-18 Marcus Stålhammar , Jorge Larana-Aragon , Johannes Knolle , Emil J. Bergholtz

Internodal dynamics of quasiparticles in Weyl semimetals manifest themselves in hydrodynamic, transport and thermodynamic phenomena and are essential for potential valleytronic applications of these systems. In an external magnetic field,…

Mesoscale and Nanoscale Physics · Physics 2020-05-19 G. Bednik , K. S. Tikhonov , S. V. Syzranov

The recent experimental realization of a high quality WSe$% _{2} $ leads to the possibility of magneto-optical measurements and the manipulation of the spin and valley degrees of freedom. We study the influence of the very strong spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2016-07-26 M. Tahir , P. Vasilopoulos

The magneto-optical transport of gapless type-I tilted single Weyl semimetals exhibits suppression of total magnetoconductivities in the presence of orbital magnetic moment(OMM) in linear and nonlinear responses (Yang Gao et al., Phys. Rev.…

Mesoscale and Nanoscale Physics · Physics 2025-09-10 Amit Gupta

Time-reversal symmetry breaking allows for a rich set of magneto-transport properties related to electronic topology. Focusing on the magnetic Weyl semimetal Co$_3$Sn$_2$S$_2$, we prepared micro-ribbons and investigated their transverse and…

The peculiar band structure of semimetals exhibiting Dirac and Weyl crossings can lead to spectacular electronic properties such as large mobilities accompanied by extremely high magnetoresistance. In particular, two closely neighbouring…

We report the thermal and electrical conductivity data for the magnetic Weyl semimetal SmAlSi measured in a magnetic field (B) with two different orientations. In one case, B was applied perpendicular to the heat or charge current, in the…

Strongly Correlated Electrons · Physics 2025-01-24 Mujeeb Ahmad , Md Shahin Alam , Xiaohan Yao , Fazel Tafti , Marcin Matusiak

We consider effects of spatial dispersion in noncentrosymmetric time-reversal invariant Weyl metals in the presence of a static magnetic field. In particular, we study currents that are linear in both the spatial derivatives of an applied…

Mesoscale and Nanoscale Physics · Physics 2022-07-12 S. Nandy , D. A. Pesin
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