نتایج جستجو برای: dirac semimetal

تعداد نتایج: 20016  

2016
Xiang-Long Yu Yuan-Jun Jin Jiansheng Wu

Weyl semimetals have recently attracted enormous attention due to their unusual features. So far, this novel state has been predicted theoretically and confirmed experimentally in several materials, such as HgTe, LaPtBi, Y2Ir2O7, TaAs, TaP, NbAs, NbP and HgCr2Se4. Doping plays an important role in the research of condensed-matter materials. However, its influence on the Weyl semimetal has been ...

2016
Hui Li Hongtao He Hai-Zhou Lu Huachen Zhang Hongchao Liu Rong Ma Zhiyong Fan Shun-Qing Shen Jiannong Wang

A large negative magnetoresistance (NMR) is anticipated in topological semimetals in parallel magnetic fields, demonstrating the chiral anomaly, a long-sought high-energy-physics effect, in solid-state systems. Recent experiments reveal that the Dirac semimetal Cd3As2 has the record-high mobility and positive linear magnetoresistance in perpendicular magnetic fields. However, the NMR has not ye...

2014
Zhenhua Qiao Wenguang Zhu

We focus on describing the topological Weyl semimetal, this state is a three-dimensional analog of graphene with linearly dispersing excitations and provides a condensed-matter realization of Weyl fermions that obeys a two-component Dirac equation. It also exhibits remarkable topological properties manifested by surface states in the form of Fermi arcs, which are impossible to realize in purely...

2015
Yasuo Minami Kotaro Araki Thang Duy Dao Tadaaki Nagao Masahiro Kitajima Jun Takeda Ikufumi Katayama

Dirac-like electrons in solid state have been of great interest since they exhibit many peculiar physical behaviors analogous to relativistic mechanics. Among them, carriers in graphene and surface states of topological insulators are known to behave as massless Dirac fermions with a conical band structure in the two-dimensional momentum space, whereas electrons in semimetal bismuth (Bi) are ex...

Journal: :Nano letters 2015
Seung Su Baik Keun Su Kim Yeonjin Yi Hyoung Joon Choi

Thin flakes of black phosphorus (BP) are a two-dimensional (2D) semiconductor whose energy gap is predicted being sensitive to the number of layers and external perturbations. Very recently, it was found that a simple method of potassium (K) doping on the surface of BP closes its band gap completely, producing a Dirac semimetal state with a linear band dispersion in the armchair direction and a...

Journal: :International Journal of Modern Physics B 2013

Journal: :Physical Chemistry Chemical Physics 2017

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