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

Liebmann M; Rinaldi C; Di Sante D; Kellner J; Pauly C; Wang RN; Boschker JE; Giussani A; Bertoli S; Cantoni M; Baldrati L; Asa M; Vobornik I; Panaccione G; Marchenko D; Sanchez-Barriga J; Rader O; Calarco R; Picozzi S; Bertacco R; Morgenstern M

Advanced Materials, Vol.28, No.3, 560-560, 2016

DOI10.1002/adma.201503459 Export Citation

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

Liebmann M, Rinaldi C, Di Sante D, Kellner J, Pauly C, Wang RN, Boschker JE, Giussani A, Bertoli S, Cantoni M, Baldrati L, Asa M, Vobornik I, Panaccione G, Marchenko D, Sanchez-Barriga J, Rader O, Calarco R, Picozzi S, Bertacco R, Morgenstern M

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.