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. 2016 Jan 20;28(3):560-5.
doi: 10.1002/adma.201503459. Epub 2015 Nov 24.

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

Marcus Liebmann  1 , Christian Rinaldi  2 , Domenico Di Sante  3   4 , Jens Kellner  1 , Christian Pauly  1 , Rui Ning Wang  5 , Jos Emiel Boschker  5 , Alessandro Giussani  5 , Stefano Bertoli  6 , Matteo Cantoni  6 , Lorenzo Baldrati  6 , Marco Asa  6 , Ivana Vobornik  7 , Giancarlo Panaccione  7 , Dmitry Marchenko  8 , Jaime Sánchez-Barriga  9 , Oliver Rader  9 , Raffaella Calarco  5 , Silvia Picozzi  3 , Riccardo Bertacco  2 , Markus Morgenstern  1
Affiliations

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

Marcus Liebmann et al. Adv Mater. .

Abstract

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.

Keywords: Rashba effect; ferroelectricity; photoelectron spectroscopy; piezoforce microscopy.

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