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Under broken time reversal symmetry such as in the presence of external magnetic field or internal magnetization, a transverse voltage can be established in materials perpendicular to both longitudinal current and applied magnetic field,…

Materials Science · Physics 2020-02-04 Hua Wang , Xiaofeng Qian

The $\mathrm{Co_2}$ family of ferromagnetic Heusler alloys have attracted interest due to their fully spin-polarized nature, making them ideal for applications in spintronic devices. More recently, the existence of room temperature…

Mesoscale and Nanoscale Physics · Physics 2021-01-19 Rishi Bhandia , Bing Cheng , Tobias Brown-Heft , Shouvik Chatterjee , Christopher J. Palmstrøm , N. Peter Armitage

Dirac and Weyl nodal materials can host low-energy relativistic quasiparticles. Under strong magnetic fields, the topological properties of Dirac/Weyl materials can directly manifest through quantum Hall states. However, most Dirac/Weyl…

Mesoscale and Nanoscale Physics · Physics 2020-08-11 Gang Qiu , Chang Niu , Yixiu Wang , Mengwei Si , Zhuocheng Zhang , Wenzhuo Wu , Peide D. Ye

Topological Dirac and Weyl semimetals have an energy spectrum that hosts Weyl nodes appearing in pairs of opposite chirality. Topological stability is ensured when the nodes are separated in momentum space and unique spectral and transport…

Mesoscale and Nanoscale Physics · Physics 2016-12-13 Adolfo G. Grushin , Jorn W. F. Venderbos , Ashvin Vishwanath , Roni Ilan

We study the hydrodynamic transport of electrons in a Weyl semimetal in a strong magnetic field. Impurity scattering in a Weyl semimetal with two Weyl nodes is strongly anisotropic as a function of the direction of the field and is…

Mesoscale and Nanoscale Physics · Physics 2022-03-29 Siyu Zhu , Grigory Bednik , Sergey Syzranov

How strong correlations and topology interplay is a topic of great current interest. In this perspective paper, we focus on correlation-driven gapless phases. We take the time-reversal symmetric Weyl semimetal as an example because it is…

Strongly Correlated Electrons · Physics 2024-08-02 Diana M. Kirschbaum , Monika Lužnik , Gwenvredig Le Roy , Silke Paschen

We theoretically investigate the bilinear current, scaling as $j\sim EB$, in two- and three-dimensional systems. Based on the extended semiclassical theory, we develop a unified theory including both longitudinal and transverse currents. We…

Mesoscale and Nanoscale Physics · Physics 2024-04-12 Zhanyunxin Du , Yue-Xin Huang , Xiao Li

The successful realization of the topological Weyl semimetals has revolutionized contemporary physics. In recent years, multi-Weyl semimetals, a class of topological Weyl semimetals, has attracted broad interest in condensed-matter physics.…

Strongly Correlated Electrons · Physics 2023-06-19 Amar Bharti , Gopal Dixit

Achieving a giant anomalous Hall effect (AHE) and enabling its effective tuning are fundamental goals for topological spintronics. Magnetic Weyl semimetals hosting flat bands offer a promising route to maximize the AHE. However, while…

Materials Science · Physics 2026-03-31 Tingyan Chen , Shengpu Huang , Jing Fan , Dong-Hui Xu , Rui Wang , Da-Shuai Ma

Several correlation and interference effects in strong-field physics are investigated. We show that the interference of continuum wave packets can be the dominant mechanism of high-harmonic generation (HHG) in the over-the-barrier regime.…

Highly nonlinear optical phenomena can provide access to properties of electronic systems which are otherwise difficult to access through conventional linear optical spectroscopies. In particular, high harmonic generation (HHG) in…

Optics · Physics 2021-04-28 K. Uchida , V. Pareek , K. Nagai , K. M. Dani , K. Tanaka

Strong-field physics is currently experiencing a shift towards the use of mid-IR driving wavelengths. This is because they permit conducting experiments unambiguously in the quasi-static regime and enable exploiting the effects related to…

The magnetic textures of Weyl semimetals are embedded into their topological structure and interact dynamically with it. Here, we examine electric field-induced structural phase transitions in domain walls mediated by the spin transfer…

Materials Science · Physics 2023-07-20 Shiva Heidari , Reza Asgari , Dimitrie Culcer

The generation of high harmonics in laser-irradiated light homonuclear diatomics (H2+, N2 and O2) compared to that in atomic counterparts (of nearly identical binding energy) is studied within the velocity gauge version of conventional…

Atomic Physics · Physics 2009-11-11 Vladimir I. Usachenko , Pavel E. Pyak , Shih-I Chu

We compute and analyze the dependence of excitonic second- and third-harmonic generation (SHG/THG) as a function of the optical excitation intensity in the presence of static electric fields by solving the semiconductor Bloch equations. Our…

Mesoscale and Nanoscale Physics · Physics 2025-11-10 Ruixin Zuo , Matthias Reichelt , Cong Ngo , Xiaohong Song , Weifeng Yang , Torsten Meier

We propose a way to observe the chiral magnetic effect in non-centrosymmetric Weyl semimetals under the action of strong electric field, via the non-linear part of their I-V characteristic that is odd in the external magnetic field, or…

Mesoscale and Nanoscale Physics · Physics 2021-01-04 S. Nandy , D. A. Pesin

Over the past decade, ultrafast electron dynamics in the solid state have been extensively studied using various strong light-matter interaction techniques, such as high-harmonic generation. These studies lead to multiple interpretations of…

The thermoelectric effect is the generation of an electrical voltage from a temperature gradient in a solid material due to the diffusion of free charge carriers from hot to cold. Identifying materials with large thermoelectric response is…

Strongly Correlated Electrons · Physics 2018-05-31 Brian Skinner , Liang Fu

In the field of high-order harmonic generation from solids, the electron motion typically exceeds the edge of the first Brillouin zone. In conventional nonlinear optics, on the other hand, the excursion of band electrons is negligible.…

Optics · Physics 2022-12-28 Jan Reislöhner , Doyeong Kim , Ihar Babushkin , Adrian N. Pfeiffer

Weyl semimetals, such as $TaIrTe_{4}$, characterized by their unique band structures and exotic transport phenomena, have become a central focus in modern electronics. Despite extensive research, a systematic understanding of the impact of…

Materials Science · Physics 2024-11-26 Longfei Guo , Shaowen Xu , Qilong Cui , Qingmin Hu , Ruixue Li , Gaofeng Xu , Fanhao Jia , Yuan Li