4.8 Article

Giant Rashba-Type Spin Splitting in Ferroelectric GeTe(111)

期刊

ADVANCED MATERIALS
卷 28, 期 3, 页码 560-+

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WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201503459

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资金

  1. German science foundation [SFB 917/A3]
  2. BMBF [05K13PA4]
  3. EU (FP7 project PASTRY) [GA 317746]
  4. Italian Ministry of Research [FIRBRBAP115AYN]
  5. Fondazione Cariplo [2013-0726, 2013-0623]
  6. Fonds National de la Recherche (Luxembourg)

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Photoelectron spectroscopy in combination with piezoforce microscopy reveals that the helicity of Rashba bands is coupled to the nonvolatile ferroelectric polarization of GeTe(111). A novel surface Rashba band is found and fingerprints of a bulk Rashba band are identified by comparison with density functional theory calculations.

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