Spin Mapping of Surface and Bulk Rashba States in Ferroelectric a-GeTe(111) Films

Abstract

A comprehensive mapping of the spin polarization of the electronic bands in ferroelectric a-GeTe(111) films has been performed using a time-of-flight momentum microscope equipped with an imaging spin filter that enables a simultaneous measurement of more than 10.000 data points (voxels). A Rashba type splitting of both surface and bulk bands with opposite spin helicity of the inner and outer Rashba bands is found revealing a complex spin texture at the Fermi energy. The switchable inner electric field of GeTe implies new functionalities for spintronic devices.

References in corpus (4)

• Ferroelectricity and Rashba effect in GeTe
• Strongly spin-orbit coupled two-dimensional electron gas emerging near the surface of polar semiconductors
• Multi-channel exchange-scattering spin polarimetry
• Orbital mapping of energy bands and the truncated spin polarization in three-dimensional Rashba semiconductors

Cited by in corpus (22)

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• RKKY interaction in three-dimensional electron gases with linear spin-orbit coupling
• Operando imaging of all-electric spin texture manipulation in ferroelectric and multiferroic Rashba semiconductors
• Spin- and angle-resolved photoemission on topological materials
• Single-Hemisphere Photoelectron Momentum Microscope With Time-of-Flight Recording
• Chiral magnetism of magnetic adatoms generated by Rashba electrons
• Fe/GeTe(111) heterostructures as an avenue towards 'ferroelectric Rashba semiconductors'-based spintronics
• A Novel Ferroelectric Rashba Semiconductor
• Reliable methods for seamless stitching of tight-binding models based on maximally localized Wannier functions
• Spin- and time-resolved photoelectron spectroscopy and diffraction studies using time-of-flight momentum microscopes
• Flux periodic oscillations and phase-coherent transport in GeTe nanowire-based devices
• Spin-dependent two-photon Bragg scattering in the Kapitza-Dirac effect
• Evidence for large Rashba splitting in PtPb4 from Angle-Resolved Photoemission Spectroscopy
• Impurity-induced orbital magnetization in a Rashba electron gas
• Strong and Weak Three-Dimensional Topological Insulators Probed by Surface Science Methods
• Conduction Band Structure and Ultrafast Dynamics of Ferroelectric $\alpha$-GeTe(111)
• Time-of-Flight Photoelectron Momentum Microscopy at 100-500 MHz Synchrotron Sources: Electron-Optical Chopping or Bandwidth Pre-Selection