Dirac semimetal in three dimensions.
TLDR
It is shown that the pseudorelativistic physics of graphene near the Fermi level can be extended to three dimensional materials and β-cristobalite BiO(2) is metastable, so it can be physically realized as a 3D analog to graphene.Abstract:
We show that the pseudorelativistic physics of graphene near the Fermi level can be extended to three dimensional (3D) materials. Unlike in phase transitions from inversion symmetric topological to normal insulators, we show that particular space groups also allow 3D Dirac points as symmetry protected degeneracies. We provide criteria necessary to identify these groups and, as an example, present ab initio calculations of β-cristobalite BiO(2) which exhibits three Dirac points at the Fermi level. We find that β-cristobalite BiO(2) is metastable, so it can be physically realized as a 3D analog to graphene.read more
Citations
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Journal ArticleDOI
Weyl and Dirac semimetals in three-dimensional solids
TL;DR: Weyl and Dirac semimetals as discussed by the authors are three-dimensional phases of matter with gapless electronic excitations that are protected by topology and symmetry, and they have generated much recent interest.
Journal ArticleDOI
Topological Photonics
Tomoki Ozawa,Hannah M. Price,Alberto Amo,Nathan Goldman,Mohammad Hafezi,Ling Lu,Mikael C. Rechtsman,David Schuster,Jonathan Simon,Oded Zilberberg,Iacopo Carusotto +10 more
TL;DR: Topological photonics is a rapidly emerging field of research in which geometrical and topological ideas are exploited to design and control the behavior of light as mentioned in this paper, which holds great promise for applications.
Journal ArticleDOI
Discovery of a Three-Dimensional Topological Dirac Semimetal, Na3Bi
Zhongkai Liu,Bo Zhou,Bo Zhou,Yong Zhang,Zhijun Wang,Hongming Weng,Dharmalingam Prabhakaran,Sung-Kwan Mo,Zhi-Xun Shen,Zhong Fang,Xi Dai,Zahid Hussain,Yulin Chen,Yulin Chen +13 more
TL;DR: In this article, 3D Dirac fermions with linear dispersions along all momentum directions were detected in 3D topological Dirac semimetals (TDSs) with angle-resolved photoemission spectroscopy.
Journal ArticleDOI
Negative magnetoresistance without well-defined chirality in the Weyl semimetal TaP
Frank Arnold,Chandra Shekhar,Shu-Chun Wu,Yan Sun,Ricardo Donizeth dos Reis,Nitesh Kumar,Marcel Naumann,M. O. Ajeesh,Marcus Schmidt,Adolfo G. Grushin,Jens H. Bardarson,Michael Baenitz,Dmitry A. Sokolov,Horst Borrmann,Michael Nicklas,Claudia Felser,Elena Hassinger,Binghai Yan +17 more
TL;DR: This work establishes the detailed Fermi-surface topology of the recently identified WSM TaP via combined angle-resolved quantum-oscillation spectra and band-structure calculations and observes a large negative longitudinal magnetoresistance.
Journal ArticleDOI
A stable three-dimensional topological Dirac semimetal Cd3As2
Zhongkai Liu,Juan Jiang,Bo Zhou,Zhijun Wang,Yi Zhang,Hongming Weng,Dharmalingam Prabhakaran,Sung-Kwan Mo,Han Peng,Pavel Dudin,Timur K. Kim,Moritz Hoesch,Zhong Fang,Xi Dai,Zhi-Xun Shen,Donglai Feng,Zahid Hussain,Yulin Chen +17 more
TL;DR: In this paper, it was shown that Cd3As2 is an experimental realization of a 3D Dirac semimetal that is stable at ambient conditions, using angle-resolved photoelectron spectroscopy.
References
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Book
Pearson's handbook of crystallographic data for intermetallic phases
Pierre Villars,L. d. Calvert +1 more
TL;DR: All crystallographic data are now given in the standard setting according to the International Tables for Crystallography, and the following improvements over the original Pearson's.
Journal ArticleDOI
Group Theory and Its Application to Physical Problems
Morton Hammermesh,Carson Flammer +1 more
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