中文
相关论文

相关论文: Chiral Anomaly Trapped in Weyl Metals: Nonequilibr…

200 篇论文

Chiral anomaly, a non-conservation of chiral charge pumped by the topological nontrivial gauge fields, has been predicted to exist in Weyl semimetals. However, until now, the experimental signature of this effect exclusively relies on the…

The discovery of a chiral anomaly in Weyl semimetals, the non-conservation of chiral charge and energy across two opposite chirality Weyl nodes, has sparked immense interest in understanding its impact on various physical phenomena. Here,…

介观与纳米尺度物理 · 物理学 2023-07-19 Sunit Das , 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

The Weyl semimetal is characterized by three-dimensional linear band touching points called Weyl nodes. These nodes come in pairs with opposite chiralities. We show that the coupling of circularly polarized photons with these chiral…

介观与纳米尺度物理 · 物理学 2016-01-19 Ching-Kit Chan , Patrick A. Lee , Kenneth S. Burch , Jung Hoon Han , Ying Ran

The chiral anomaly is the predicted break down of chiral symmetry in a Weyl semimetal with monopoles of opposite chirality when an electric field parallel to a magnetic field is applied. It occurs because of charge pumping from a positive…

We show how the axial (chiral) anomaly induces a spin torque on the magnetization in magnetic Weyl semimetals. The anomaly produces an imbalance in left- and right-handed chirality carriers when non-orthogonal electric and magnetic fields…

介观与纳米尺度物理 · 物理学 2021-05-27 Julia D. Hannukainen , Alberto Cortijo , Jens H. Bardarson , Yago Ferreiros

Typical Weyl semimetals host chiral surface states and hence show an anomalous Hall response. Although a Weyl semimetal phase is known to be robust against weak disorder, the influence of disorder on chiral states is not fully clarified so…

介观与纳米尺度物理 · 物理学 2016-12-21 Yositake Takane

We consider theoretically surface plasmon polaritons in Weyl semimetals. These materials contain pairs of band touching points - Weyl nodes - with a chiral topological charge, which induces an optical anisotropy and anomalous transport…

介观与纳米尺度物理 · 物理学 2016-06-15 Johannes Hofmann , Sankar Das Sarma

The Dirac and Weyl semimetals are unusual materials in which the nodes of the bulk states are protected against gap formation by crystalline symmetry. The chiral anomaly~\cite{Adler,Bell}, predicted to occur in both systems, was recently…

In condensed matter physics, the term "chiral anomaly" implies the violation of the separate number conservation laws of Weyl fermions of different chiralities in the presence of parallel electric and magnetic fields. One effect of chiral…

介观与纳米尺度物理 · 物理学 2024-03-12 S. Nandy , Gargee Sharma , A. Taraphder , Sumanta Tewari

Weyl semimetals possess massless chiral quasi-particles, and are thus affected by the triangle anomalies. We discuss the features of the chiral magnetic and chiral vortical effects specific to Weyl semimetals, and then propose three novel…

高能物理 - 理论 · 物理学 2014-01-30 Gokce Basar , Dmitri E. Kharzeev , Ho-Ung Yee

The nodal points in a Weyl semimetal are generally considered as the causes of the chiral anomaly and the chiral magnetic effect (CME). Employing a linear-response analysis of a two-band lattice model, we show that the Weyl nodes and thus…

介观与纳米尺度物理 · 物理学 2015-11-10 Ming-Che Chang , Min-Fong Yang

Weyl semimetals are three-dimensional topological states of matter, in a sense that they host paired monopoles and antimonopoles of Berry curvature in momentum space, leading to the chiral anomaly. The chiral anomaly has long been believed…

介观与纳米尺度物理 · 物理学 2015-06-26 Hai-Zhou Lu , Song-Bo Zhang , Shun-Qing Shen

Weyl fermions, which are fermions with definite chiralities, can give rise to anomalous breaking of the symmetry of the physical system which they are a part of. In their (3+1)-dimensional realizations in condensed matter systems, i.e., the…

介观与纳米尺度物理 · 物理学 2014-10-17 Jimmy A. Hutasoit , Jiadong Zang , Radu Roiban , Chao-Xing Liu

The condensed-matter version of the chiral anomaly describes how electrons are pumped from a Weyl node with negative chirality to a Weyl node with positive chirality using parallel electric and magnetic fields. Key experimental signatures…

介观与纳米尺度物理 · 物理学 2025-06-12 Yongjian Wang , Alexander Wowchik , Thomas Boemerich , A. A. Taskin , Achim Rosch , Yoichi Ando

A Weyl semimetal has Weyl nodes that always come in pairs with opposite chiralities. Notably, different ways of connection between nodes are possible and would lead to distinct topologies. Here we identify their differences in many respects…

介观与纳米尺度物理 · 物理学 2019-03-19 Ming-Chien Hsu , Hsin Lin , M. Zahid Hasan , Shin-Ming Huang

We study magnetotransport in a disordered Weyl semimetal taking into account localization effects exactly. In the vicinity of a Weyl node, a single chiral Landau level coexists with a number of conventional non-chiral levels. Disorder…

介观与纳米尺度物理 · 物理学 2017-09-13 E. Khalaf , P. M. Ostrovsky

The planar Hall effect (PHE), the appearance of an in-plane transverse voltage in the presence of coplanar electric and magnetic fields, has been ascribed to the chiral anomaly and Berry curvature effects in Weyl semimetals. In the presence…

介观与纳米尺度物理 · 物理学 2023-10-06 L. Medel Onofre , A. Martín-Ruiz

In this paper, the chiral Hall effect of strained Weyl semimetals without any external magnetic field is proposed. Electron-phonon coupling emerges in the low-energy fermionic sector through a pseudogauge potential. We show that, by using…

材料科学 · 物理学 2020-04-22 Shiva Heidari , Reza Asgari

We present an overview of our recent work on transport phenomena in Weyl metals, which may be connected to their nontrivial topological properties, particularly to chiral anomaly. We argue that there are two basic phenomena, which are…

介观与纳米尺度物理 · 物理学 2015-06-24 A. A. Burkov