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Table of contents(6 chapters)
About this book
Christian Pauly demonstrates the strong topological properties of the technologically relevant phase change materials Sb2Te3 and Ge2Sb2Te5 by using two powerful techniques for mapping the surface electronic structure: scanning tunneling spectroscopy (STS) and angle-resolved photoemission spectroscopy (ARPES). In the case of a phase change material, this opens up the possibility of switching between an insulating amorphous and a conducting topological phase on nanosecond-time scales. Moreover, the author presents first experimental results of a weak topological insulator, namely on the bismuth-based graphene-like sheet system Bi14Rh3I9, revealing a topologically protected one-dimensional edge channel as its fingerprint. The edge state is as narrow as 0.8 nm, making it extremely attractive to device physics. Those strong and weak topological insulators are a new phase of quantum matter giving rise to robust boundary states which are protected from backscattering and localization.
Authors and Affiliations
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2nd Physical Institute B, RWTH Aachen University, Aachen, Germany
Christian Pauly
About the author
Christian Pauly is working as a postdoc in the II. Institute of physics B of the RWTH Aachen University. His work focuses on the study of the topological properties of graphene-like sheet systems which belong to the class of weak topological insulators.
Bibliographic Information
Book Title: Strong and Weak Topology Probed by Surface Science
Book Subtitle: Topological Insulator Properties of Phase Change Alloys and Heavy Metal Graphene
Authors: Christian Pauly
Series Title: MatWerk
DOI: https://doi.org/10.1007/978-3-658-11811-2
Publisher: Springer Wiesbaden
eBook Packages: Biomedical and Life Sciences, Biomedical and Life Sciences (R0)
Copyright Information: Springer Fachmedien Wiesbaden 2015
Softcover ISBN: 978-3-658-11810-5Published: 30 January 2016
eBook ISBN: 978-3-658-11811-2Published: 22 January 2016
Series ISSN: 2522-0756
Series E-ISSN: 2522-0764
Edition Number: 1
Number of Pages: VIII, 166
Number of Illustrations: 24 b/w illustrations, 53 illustrations in colour
Topics: Solid State Physics, Nanoscale Science and Technology, Spectroscopy and Microscopy