Journal
PHYSICAL REVIEW B
Volume 106, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.106.L060407
Keywords
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Funding
- National Natural Science Foundation of China [51801163]
- 100 Talents Plan of Hebei Province [E2020050014]
- Nature Science Foundation of Hebei Province [A2021202002]
- National Natu- ral Science Foundation of China [11874306, 12174320]
- Natural Science Foundation of Chongqing [cstc2021jcyj- msxmX0209, cstc2022ycjh- bgzxm0127]
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In this Letter, the researchers demonstrate that Sr2CuF6 is a spintronic material with multiple dimensions of spin-gapless semiconducting states using first-principles calculations and symmetry analysis. Their findings extend the range of spin-gapless semiconductors and have significant implications for new-generation spintronics applications.
Spin-gapless semiconductors (SGSs), with intrinsic magnetism, 100% spin polarization, and zero-gap band crossing points, have attracted great scientific interest owing to their potential applications in spintronics. In this Letter, using first-principles calculations and symmetry analysis, we demonstrate that the realistic material Sr2CuF6 is a spintronic material with multiple dimensions of spin-gapless semiconducting states. Tetragonal Sr2CuF6 has a zero-dimensional zero-gap nodal point, a one-dimensional zero-gap nodal line, and a twodimensional nearly zero-gap nodal surface in one spin direction. Moreover, it hosts a wide band gap in the other spin direction. Our results extend the SGS members from nodal point SGSs and nodal line SGSs to nodal surface SGSs. Furthermore, we report a SGS candidate in an experimentally realized material exhibiting different dimensions of zero-gap points in momentum space. It is hoped that spintronic materials with multiple dimensions of spin-gapless semiconducting states may have significant applications in new-generation spintronics.
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