期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.016402
关键词
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资金
- National Natural Science Foundation of China [11734003, 11922401, 11774028, 11574029]
- National Key RAMP
- D Program of China [2016YFA0300600]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB30000000]
- Basic Research Funds of Beijing Institute of Technology [2017CX01018]
- Graduate Technological Innovation Project of the Beijing Institute of Technology [2018CX10028, 2019CX10018]
Spin-gapless semimetals (SGSMs), which generate 100% spin polarization, are viewed as promising semi-half-metals in spintronics with high speed and low consumption. We propose and characterize a new Z(2) class of topological nodal line (TNL) in SGSMs. The proposed TNLSGSMs are protected by space-time inversion symmetry or glide mirror symmetry with two-dimensional (2D) fully spin-polarized nearly flat surface states. Based on first-principles calculations and effective model analysis, a series of high-quality materials with R (3) over barc and R3c space groups are predicted to realize such TNLSGSMs (chainlike). The 2D fully spin-polarized nearly flat surface states may provide a route to achieving equal spin pairing topological superconductivity as well as topological catalysts.
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