期刊
PHYSICAL REVIEW B
卷 88, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.045408
关键词
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资金
- KAKENHI
- Topological Quantum Phenomena [23103511]
- [24540375]
- Grants-in-Aid for Scientific Research [24540375] Funding Source: KAKEN
A weak topological insulator (WTI) bears, generally, an even number of Dirac cones on its surface; they are susceptible to doubling, while on the surface of a certain orientation it shows no Dirac cone. On this dark surface of a WTI, we predict that a single pair of isolated one-dimensional perfectly conducting channels emerges and forms either a closed loop or a segment of a line. The former is associated typically with a single-atomic-layer-thick island formed on the dark surface, while the latter is shown to be the consequence of a pair of crystal (screw) dislocations terminating on the dark surface.
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