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相关论文: Hidden Weyl Points in Centrosymmetric Paramagnetic…

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Magnetic topological semimetals exhibit emerging magneto-transport behaviors, such as the giant anomalous Hall effect (AHE), chiral Hall effect, and antisymmetric magnetoresistance. In this work, based on the magnetic Weyl semimetal…

介观与纳米尺度物理 · 物理学 2026-04-14 Jinying Yang , Qingqi Zeng , Yibo Wang , Meng Lyu , Yang Liu , Xingchen Liu , Xuebin Dong , Binbin Wang , Xiyang Li , Enke Liu

We performed the angle dependent magnetoresistance (MR), Hall effect measurements, the temperature dependent magneto-thermoelectric power (TEP) S(T) measurements, and the first-principles calculations to study the electronic properties of…

强关联电子 · 物理学 2017-06-21 F. C. Chen , H. Y. Lv , X. Luo , W. J. Lu , Q. L. Pei , G. T. Lin , Y. Y. Han , X. B. Zhu , W. H. Song , Y. P. Sun

Three dimensional materials with strong spin-orbit coupling and magnetic interactions represent an opportunity to realize a variety of rare and potentially useful topological phases. In this work, we use first principles calculations to…

材料科学 · 物理学 2019-05-29 Sugata Chowdhury , Kevin F. Garrity , Francesca Tavazza

We study the transport properties of junctions of normal and superconducting Weyl semi-metal with tilted dispersion, in the presence of magnetization induced by magnetic strips. The sub gap tunnelling conductance shows robust signatures in…

介观与纳米尺度物理 · 物理学 2020-08-12 M. Maiti , J. Smotlacha

Magnetotransport measurements are a popular way of characterizing the electronic structure of topological materials and often the resulting datasets cannot be described by the well-known Drude model due to large, non-parabolic…

介观与纳米尺度物理 · 物理学 2019-10-23 J. C. de Boer , D. P. Leusink , A. Brinkman

By means of high-resolution electron energy loss spectroscopy, we investigate the low-energy excitation spectrum of transition-metal monopnictides hosting Weyl fermions. We observe gapped plasmonic modes in (001)-oriented surfaces of single…

介观与纳米尺度物理 · 物理学 2019-03-13 Gennaro Chiarello , Johannes Hofmann , Zhilin Li , Vito Fabio , Liwei Guo , Xiaolong Chen , Sankar Das Sarma , Antonio Politano

The intertwining of magnetism with topology is known to give rise to exotic quantum phenomena. Here, we explore the magnetotransport properties of NdAlSi, a magnetic Weyl semimetal that spontaneously breaks inversion and time-reversal…

介观与纳米尺度物理 · 物理学 2025-02-06 Bo Zhang , Junbo Liao , Zhentao Huang , Yanyan Shangguan , Shufan Cheng , Hao Xu , Zihang Song , Shuai Dong , Song Bao , Rui Wang , Jinsheng Wen

We report magnetotransport study on type-II Weyl semimetal WP$_2$ single crystals. Magnetoresistance (MR) exhibits a nonsaturating $H^{n}$ field dependence (14,300\% at 2 K and 9 T) whereas systematic violation of Kohler's rule was…

材料科学 · 物理学 2017-09-20 Aifeng Wang , D. Graf , Yu Liu , Qianheng Du , Jiabao Zheng , Hechang Lei , C. Petrovic

Weyl semimetals, characterized by nodal points in the bulk and Fermi arc states on the surface, have recently attracted extensive attention due to the potential application on low energy consumption electronic materials. In this report, the…

强关联电子 · 物理学 2019-07-08 W. Zhou , B. Li , C. Q. Xu , M. R. van Delft , Y. G. Chen , X. C. Fan , B. Qian , N. E. Hussey , Xiaofeng Xu

The band structure of a type-II Weyl semimetal has pairs of electron and hole pockets that coexist over a range of energies and touch at a topologically protected conical point. We identify signatures of this Weyl point in the magnetic…

介观与纳米尺度物理 · 物理学 2016-06-16 T. E. O'Brien , M. Diez , C. W. J. Beenakker

Magnetic topological materials have recently drawn significant importance and interest, due to their topologically nontrivial electronic structure within spontaneous magnetic moments and band inversion. Based on first-principles…

强关联电子 · 物理学 2018-07-20 R. Wang , Y. J. Jin , J. Z. Zhao , Z. J. Chen , Y. J. Zhao , H. Xu

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…

Symmetry-protected topological semimetals are at the focus of solid-state research due to their unconventional properties, for example, regarding transport. By investigating local two-band Bloch Hamiltonians in the spin-1/2 basis for the…

介观与纳米尺度物理 · 物理学 2022-03-22 Andy Knoll , Carsten Timm

The discovery of time-reversal-invariant topological states has drawn great attention in recent decades. However, despite the potential of displaying a variety of exotic physics, the study of magnetic topological phases lags behind due to…

材料科学 · 物理学 2022-02-15 Anumita Bose , Rajdeep Banerjee , Awadhesh Narayan

Electron states with the spin-momentum-locked Dirac dispersion at the surface of a three-dimensional (3D) topological insulator are known to lead to weak antilocalization (WAL), i.e. low temperature and low-magnetic field quantum…

Understanding the magnetism and its possible correlations to the topological properties has emerged as a forefront and difficult topic in studying magnetic Weyl semimetals. Co$_{3}$Sn$_{2}$S$_{2}$ is a newly discovered magnetic Weyl…

Colossal negative magnetoresistance and the associated field-induced insulator-to-metal transition, the most characteristic features of magnetic semiconductors, are observed in n-type rare earth oxides and chalcogenides, p-type manganites,…

材料科学 · 物理学 2011-07-19 Ursula Wurstbauer , Cezary Śliwa , Dieter Weiss , Tomasz Dietl , Werner Wegscheider

We employ {\it ab-initio} fully-relativistic electronic structure calculations to study the stability of the Weyl points in the momentum space within the class of the half-metallic ferromagnetic full Heusler materials, by focusing on…

材料科学 · 物理学 2017-08-02 S. Chadov , S. -C. Wu , C. Felser , I. Galanakis

Properties of two ThCr2Si2-type materials are discussed within the context of their established structural and magnetic symmetries. Both materials develop collinear, G-type antiferromagnetic order above room temperature, and magnetic ions…

强关联电子 · 物理学 2017-11-07 S W Lovesey , D D Khalyavin

Topological materials and topological phases have recently become a hot topic in condensed matter physics. In this work, we report a topological nodal-line semimetal InxTaSe2, in the presence of both charge density wave (CDW) and…