Results 61 to 70 of about 3,435 (211)

Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs

Physical Review X, 2015
Weyl semimetal is the three-dimensional analog of graphene. According to quantum field theory, the appearance of Weyl points near the Fermi level will cause novel transport phenomena related to chiral anomaly.
Xiaochun Huang, Lingxiao Zhao, Yujia Long, Peipei Wang, Dong Chen, Zhanhai Yang, Hui Liang, Mianqi Xue, Hongming Weng, Zhong Fang, Xi Dai, Genfu Chen   +11 more
doaj   +1 more source

Magnetic breakdown spectrum of a Kramers–Weyl semimetal

New Journal of Physics, 2020
We calculate the Landau levels of a Kramers–Weyl semimetal thin slab in a perpendicular magnetic field B . The coupling of Fermi arcs on opposite surfaces broadens the Landau levels with a band width that oscillates periodically in 1/ B .
G Lemut, A Donís Vela, M J Pacholski, J Tworzydło, C W J Beenakker   +4 more
doaj   +1 more source

Type‐II Dirac Fermions in Monolayer In2O: Interplay of Magnetotransport, Spin Hall Effect, and Superconductivity

Advanced Science, EarlyView.
First‐principles calculations reveal that monolayer In2O${\rm In}_2{\rm O}$ hosts type‐II Dirac fermions near the Fermi level, which split into Weyl points under spin‐orbit coupling. The material exhibits negative and giant magnetoresistance, a pronounced spin Hall effect, and phonon‐mediated superconductivity at 1.5 K, establishing it as a unique ...
Qing‐Bo Liu, De‐Ming Feng, Wen‐Neng Zhao, Yu‐Yang Zhao, Lun Xiong, Xing‐Yi Tan, Hua‐Hua Fu   +6 more
wiley   +1 more source

Chirality blockade of Andreev reflection in a magnetic Weyl semimetal [PDF]

, 2017
A Weyl semimetal with broken time-reversal symmetry has a minimum of two species of Weyl fermions, distinguished by their opposite chirality, in a pair of Weyl cones at opposite momenta +/- K that are displaced in the direction of the magnetization ...
Breitkreiz, M., Beenakker, C. W. J., N. Bovenzi, Adagideli, İnanç, M. Breitkreiz, Tworzydło, Jakub, Tworzydło, J., O'Brien, TE, Beenakker, C.W.J., Adagedeli, I., Beenakker, CWJ, Bovenzi, N, Adagideli, I, Baireuther, P., P. Baireuther, C. W. J. Beenakker, Baireuther, P, T. E. O'Brien, Breitkreiz, M, İ. Adagideli, J. Tworzydło, Tworzydlo, J., Bovenzi, N., O'Brien, T. E., Baireuther, P.S., O'Brien, T.E.   +25 more
core   +1 more source

Square-root higher-order Weyl semimetals

Nature Communications, 2022
The topological properties of square-root Weyl semimetals are derived from the square of the Hamiltonian. Here, the authors propose a tight-binding model for a square-root higher-order Weyl semimetal hosting both Fermi-arc surface and hinge states.
Lingling Song, Huanhuan Yang, Yunshan Cao, Peng Yan   +3 more
doaj   +1 more source

Giant Bulk Photovoltaic Effect in Two‐Dimensional Topological Ferroelectric Semimetal

Advanced Science, EarlyView.
ABSTRACT Ferroelectric (FE) metals have attracted growing interest because they combine ferroelectricity with metallic behavior and enable polarization‐controlled band topology near the Fermi level. However, the number of known ferroelectric metals is still limited.
Jianhua Wang, Xia Cheng, Shibo Fang, Tao Zhu, Xiaodong Zhou, Shifeng Qian, Tie Yang, Wenhong Wang, Yee Sin Ang   +8 more
wiley   +1 more source

Weyl Semimetal to Metal Phase Transitions Driven by Quasiperiodic Potentials [PDF]

, 2018
We explore the stability of three-dimensional Weyl and Dirac semimetals subject to quasiperiodic potentials. We present numerical evidence that the semimetal is stable for weak quasiperiodic potentials, despite being unstable for weak random potentials ...
Sarang Gopalakrishnan, Wilson, Justin H., Huse, David A, David A. Huse, Gopalakrishnan, Sarang, Huse, David A., Pixley, JH, Pixley, J. H., J. H. Pixley, Justin H. Wilson, Wilson, Justin H   +10 more
core   +1 more source

Topological Lifshitz transitions and Fermi arc manipulation in Weyl semimetal NbAs

Nature Communications, 2019
Surface Fermi arcs (SFAs) are characteristic features of a topological Weyl semimetal but there is no easy way to manipulate them so far. Here, the authors report manipulation of the shape, size and connections of SFAs in a Weyl semimetal NbAs, leading ...
H. F. Yang, L. X. Yang, Z. K. Liu, Y. Sun, C. Chen, H. Peng, M. Schmidt, D. Prabhakaran, B. A. Bernevig, C. Felser, B. H. Yan, Y. L. Chen   +11 more
doaj   +1 more source

Strain Tuning the Occupation of Candidate Topological Weyl States in W‐Doped MoTe2

Advanced Science, EarlyView.
The present study investigates strain‐induced modifications of the electronic structure in the Weyl semimetal Td${\rm T}_d$‐Mo0.91W0.09Te2${\mathrm{Mo}}_{0.91}{\mathrm{W}}_{0.09}{\mathrm{Te}}_{2}$ using hard X‐ray angle‐resolved photoemission spectroscopy.
Amon Lanz, Olena Tkach, Yaryna Lytvynenko, Florian Diekmann, Harshit Agarwal, Sofia Michaela Souliou, Mehdi Frachet, Michael Merz, Sergii V. Chernov, Andrei Gloskovskii, Volkmar Koller, Dmytro Kutnyakhov, Moritz Hoesch, Christoph Schlueter, Philipp Rüssmann, Yuriy Mokrousov, Matthieu Le Tacon, Kai Rossnagel, Jure Demsar, Gerd Schönhense, Hans‐Joachim Elmers, Olena Fedchenko   +21 more
wiley   +1 more source

Non-volatile chirality switching by all-optical magnetization reversal in ferromagnetic Weyl semimetal Co3Sn2S2

Communications Physics, 2022
Weyl semimetals exhibit a unique feature known as Weyl nodes, which give rise to non-trivial topological features such as an anomalous Hall effect, and there are many efforts to try and control such properties.
Naotaka Yoshikawa, Kazuma Ogawa, Yoshua Hirai, Kohei Fujiwara, Junya Ikeda, Atsushi Tsukazaki, Ryo Shimano   +6 more
doaj   +1 more source