期刊
CHINESE PHYSICS B
卷 28, 期 4, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/28/4/047301
关键词
topological crystalline insulator; magnetic Weyl semimetal; magnetically-doped Sn1-xPbx(Te,Se); Fermi arc
资金
- MRSEC Program of the National Natural Science Foundation [DMR-1419807]
- HKUST
- National ThousandYoung-Talents Program of China
- DOE Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [de-sc0010526]
Based on k . p analysis and realistic tight-binding calculations, we find that time-reversal-breaking Weyl semimetals can be realized in magnetically-doped (Mn, Eu, Cr, etc.) Sn1-xPbx(Te,Se) class of topological crystalline insulators. All the Weyl points are well separated in momentum space and possess nearly the same energy due to high crystalline symmetry. Moreover, both the Weyl points and Fermi arcs are highly tunable by varying Pb/Sn composition, pressure, magnetization, temperature, surface potential, etc., opening up the possibility of manipulating Weyl points and rewiring the Fermi arcs.
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