Dirac semimetal and topological phase transitions in A 3 Bi ( A = Na , K, Rb)
By Zhijun Wang, Yan Sun, Xing-Qiu Chen, C. Franchini, Gang Xu, H. Weng, X. Dai, Z. Fang. 2012
1,334 citations recorded by the source corpus.
Three-dimensional (3D) Dirac point, where two Weyl points overlap in momentum space, is usually unstable and hard to realize. Here we show, based on the first-principles calculations and effective model analysis, that crystalline A(3)Bi (A = Na, K, Rb) are Dirac semimetals with bulk 3D Dirac points protected by crystal symmetry. They possess nontrivial Fermi arcs on the surfaces and can be driven into various topologically distinct phases by explicit breaking of symmetries. Giant diamagnetism, linear quantum magnetoresistance, and quantum spin Hall effect will be expected for such compounds.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/c5c87277aa7e4209e743ff5662ed29e005252af3
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
- Ashvin Vishwanath
- N. P. Armitage
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Citations in the corpus
- Experimental signatures of the chiral anomaly in Dirac–Weyl semimetals (2020, background): “The search culminated in the discovery of the Dirac semimetals, Na3Bi [6] and Cd3As2, followed by the Weyl semimetals TaAs and NbAs (Sec.”
- Topological semimetals with helicoid surface states (2015, methodology): “1(c), which cross each other along certain lines, and may have two Fermi arcs[15, 16, 45].”
- Topological superconductors: a review (2016, background): “For example, in one-dimensional time-reversal-invariant superconductors, the zero-bias conductance peak is doubled [35],”
- Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd3As2. (2014, methodology): “[4] Z.”
- Observation of Weyl nodes in TaAs (2015, background): “The Dirac fermion quasiparticle has recently been revealed to be stable under the protection of some crystal symmetry in topological Dirac semimetals such as Na3Bi [4] and Cd3As2 [5].”