期刊
PHYSICAL REVIEW LETTERS
卷 107, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.036802
关键词
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资金
- U.S. Department of Energy [DE-FG02-07ER46383]
- U.S. National Science Foundation [DMR-05-37588, DMR-09-06444]
- ACS
Topological materials have unusual surface spin properties including a net surface spin current protected by the bulk symmetry properties. When such materials are reduced to thin films, their gapless spin-polarized surface states must connect, by analytic continuation, to bulk-derived quantum-well states, which are spin-unpolarized in centrosymmetric systems. The nature of this passage in a model system, Sb films, is investigated. Angle-resolved photoemission shows a smooth transition, while calculations elucidate the correlated evolution of the spin and charge distributions in real space.
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