scholarly journals Electrically charged Andreev modes in two-dimensional tilted Dirac cone systems

2020 ◽  
Vol 101 (21) ◽  
Author(s):  
Z. Faraei ◽  
S. A. Jafari
Keyword(s):  
Two Dimensional ◽  
Dirac Cone ◽  
Electrically Charged

Two-Dimensional Honeycomb B2Se with Orthogonal Lattice: High Stability and Strong Anisotropic Dirac Cone

2020 ◽  
Vol 124 (13) ◽  
pp. 7558-7565 ◽  
Author(s):  
Ji-kai Lyu ◽  
Wei-xiao Ji ◽  
Shu-feng Zhang ◽  
Chang-wen Zhang ◽  
Pei-ji Wang
Keyword(s):  
High Stability ◽  
Two Dimensional ◽  
Dirac Cone

Effect of the Dirac-cone tilt on the disorder-broadened Landau levels in a two-dimensional Dirac nodal system

2021 ◽  
Vol 104 (23) ◽  
Author(s):  
Haibo Yao ◽  
Mingfeng Zhu ◽  
Liwei Jiang ◽  
Yisong Zheng
Keyword(s):  
Landau Levels ◽  
Two Dimensional ◽  
Dirac Cone ◽  
Nodal System

scholarly journals Effects of Dirac cone tilt in a two-dimensional Dirac semimetal

2018 ◽  
Vol 98 (19) ◽  
Author(s):  
Zhao-Kun Yang ◽  
Jing-Rong Wang ◽  
Guo-Zhu Liu
Keyword(s):  
Two Dimensional ◽  
Dirac Cone ◽  
Dirac Semimetal

Two-dimensional transition-metal halide CoBr3 with spin-polarized Dirac cone

2019 ◽  
Vol 21 (32) ◽  
pp. 17740-17745 ◽  
Author(s):  
Wei-xi Zhang ◽  
Yong Li ◽  
Hui Jin ◽  
Yan-chao She
Keyword(s):  
Transition Metal ◽  
Electronic Properties ◽  
Metal Halide ◽  
Two Dimensional ◽  
Dirac Cone ◽  
Spin Polarized ◽  
Metal Materials

Recently, the discovery of two-dimensional transition-metal materials with non-trivial magnetic and electronic properties has spurred huge interest in investigating their applications in nanotechnology.

Mirror symmetry origin of Dirac cone formation in rectangular two-dimensional materials

2020 ◽  
Vol 22 (12) ◽  
pp. 6619-6625 ◽  
Author(s):  
Xuming Qin ◽  
Yi Liu ◽  
Gui Yang ◽  
Dongqiu Zhao
Keyword(s):  
Band Structure ◽  
Mirror Symmetry ◽  
Density Functional ◽  
Tight Binding ◽  
Coupling Mechanism ◽  
Two Dimensional ◽  
Dirac Cone ◽  
Two Dimensional Materials ◽  
Tight Binding Method ◽  
Cone Formation

The origin of Dirac cone band structure of 6,6,12-graphyne is revealed by a “mirror symmetry parity coupling” mechanism proposed with tight-binding method combined with density functional calculations.

Electrically Charged Two-Dimensional Skyrmions

2015 ◽  
Vol 57 (12) ◽  
pp. 1732-1742 ◽  
Author(s):  
A. Yu. Loginov
Keyword(s):  
Two Dimensional ◽  
Electrically Charged

scholarly journals Diverse Properties of Carbon-Substituted Silicenes

2020 ◽  
Vol 8 ◽  
Author(s):  
Hai Duong Pham ◽  
Shih-Yang Lin ◽  
Godfrey Gumbs ◽  
Nguyen Duy Khanh ◽  
Ming-Fa Lin
Keyword(s):  
First Principles ◽  
Energy Spectra ◽  
Two Dimensional ◽  
Dirac Cone ◽  
Density Distributions ◽  
Spatial Charge ◽  
Silicon Carbon ◽  
Two Dimensional Materials ◽  
Carbon Compounds ◽  
Carbon Substitution

The theoretical framework, which is built from the first-principles results, is successfully developed for investigating emergent two-dimensional materials, as it is clearly illustrated by carbon substitution in silicene. By the delicate VASP calculations and analyses, the multi-orbital hybridizations are thoroughly identified from the optimal honeycomb lattices, the atom-dominated energy spectra, the spatial charge density distributions, and the atom and orbital-decomposed van Hove singularities, being very sensitive to the concentration and arrangements of guest atoms. All the binary two-dimensional silicon-carbon compounds belong to the finite- or zero-gap semiconductors, corresponding to the thoroughly/strongly/slightly modified Dirac-cone structures near the Fermi level. Additionally, there are frequent π and σ band crossings, but less anti-crossing behaviors. Apparently, our results indicate the well-defined π and σ bondings.

Superconductivity in the two-dimensional nonbenzenoid biphenylene sheet with Dirac cone

2D Materials ◽  
2021 ◽  
Author(s):  
Yanfeng Ge ◽  
Zhicui Wang ◽  
Xing Wang ◽  
Wenhui Wan ◽  
Yong Liu
Keyword(s):  
Physical Properties ◽  
Fermi Level ◽  
Superconducting Devices ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Dirac Cone ◽  
Electronic Density ◽  
Strongly Coupled ◽  
Rotational Vibration ◽  
Electronic Doping

Abstract During the past decade, two-dimensional materials have attracted much attention in superconductivity due to their feasible physical properties and easy chemical modifications. Herein, we use a recently literature reported novel biphenylene sheet (BP sheet) for investigating superconductivity-related physical properties. The electronic states of BP sheet that appeared near the Fermi level are composed of pz orbital of carbon due to sp2 hybridization. Also, an anisotropic Dirac cone is formed just above the Fermi level by crossing two bands comprised of different carbon atoms. One of the two bands is quasi-flat thus leading to a peak of electronic density of states above the Fermi level. In addition, the rotational-vibration phonon mode of the six-membered carbon ring is strongly coupled with electrons. The electron-phonon coupling induces the superconductivity of 6.2 K in BP sheet. Furthermore, both small uniaxial strains and electronic doping can take the Dirac cone and high electronic density of state close to the Fermi level and further raise the superconducting critical temperature to 27.4 K and 21.5 K, respectively. The obtained result suggests that BP sheet with Dirac fermions and superconductivity can be a potential material for the development of future superconducting devices.

Germanene and stanene on two-dimensional substrates: Dirac cone and Z2 invariant

2017 ◽  
Vol 96 (7) ◽  
Author(s):  
Zeyuan Ni ◽  
Emi Minamitani ◽  
Yasunobu Ando ◽  
Satoshi Watanabe
Keyword(s):  
Two Dimensional ◽  
Dirac Cone
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