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Spin-Orbit-Induced Spin Textures of Unoccupied Surface States on Tl/Si(111)

  • Book
  • © 2015

Overview

Authors:
  1. Sebastian David Stolwijk

    1. Physikalisches Institut, University of Münster, Münster, Germany

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  • Nominated as an outstanding PhD thesis by Muenster University, Germany
  • Provides a unique design for an electron source with variable spin-polarization direction
  • Discusses metallic surface states with giant spin splitting and exceptional spin texture on a semiconductor surface
  • Deals with spin-polarized valleys at the Fermi level with promising impacts for spintronic applications
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (4 chapters)

  1. Front Matter

    Pages i-xvii
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  2. Introduction

    • Sebastian David Stolwijk
    Pages 1-8

  3. Experiment

    • Sebastian David Stolwijk
    Pages 9-29

  4. Spin Textures on Tl/Si(111)-(1\(\times \)1)

    • Sebastian David Stolwijk
    Pages 31-74

  5. Summary

    • Sebastian David Stolwijk
    Pages 75-76

  6. Back Matter

    Pages 77-80
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Keywords

About this book

This thesis describes the construction of a rotatable spin-polarized electron source and its use in spin- and angle-resolved inverse photoemission to investigate the unoccupied electron states of Tl/Si(111)-(1x1) with special emphasis on their spin texture. Towards more efficient electronics - with the electron spin as information carrier: This motto is the motivation for numerous studies in solid state physics that deal with electron states whose spin degeneracy is lifted by spin-orbit interaction. This thesis addresses the spin-orbit-induced spin textures in momentum space in the surface electronic structure of a prototypical Rashba-type hybrid system: heavy metal thallium on semiconducting silicon. For Tl/Si(111)-(1x1), the thallium adlayer provides surface states with strong spin-orbit interaction and peculiar spin-orbit-induced spin textures: spin rotations and spin chirality in momentum space for unoccupied surface states with giant spin splittings. Almost completely out-of-plane spin-polarized valleys in the vicinity of the Fermi level are identified. As the valley polarization is oppositely oriented at specific points in momentum space, backscattering should be strongly suppressed in this system.

Authors and Affiliations

  • Physikalisches Institut, University of Münster, Münster, Germany

    Sebastian David Stolwijk

About the author

Sebastian David Stolwijk was born in Münster, Germany, in 1985. After receiving his Diploma in physics with distinction from the Westfälische Wilhelms-Universität Münster in 2009, he continued his work in the field of spin phenomena in low-dimensional systems in the group of Prof. Dr. Markus Donath. In 2014, he earned the doctoral degree (Dr. rer. nat.) summa cum laude from the Westfälische Wilhelms-Universität Münster.

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