II. Institute of Physics B and JARA-FIT, RWTH Aachen University, 52074, Aachen, Germany.
Dipartimento di Fisica, Politecnico di Milano and IFN-CNR, Via Colombo 81, 20133, Milano, Italy.
Adv Mater. 2016 Jan 20;28(3):560-5. doi: 10.1002/adma.201503459. Epub 2015 Nov 24.
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.
光电电子能谱结合压电力显微镜揭示了 Rashba 能带的手性与 GeTe(111) 的非易失铁电极化相关。通过与密度泛函理论计算的比较，发现了一种新型的表面 Rashba 能带，并确定了体 Rashba 能带的特征。
