Strong and Weak Topology Probed by Surface Science
Topological Insulator Properties of Phase Change Alloys and Heavy Metal Graphene
(Sprache: Englisch)
Christian Pauly demonstrates the strong topological properties of the technologically relevant phase change materials Sb 2 Te 3 and Ge 2 Sb 2 Te 5 by using two powerful techniques for mapping the surface electronic structure: scanning tunneling spectroscopy...
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Klappentext zu „Strong and Weak Topology Probed by Surface Science “
Christian Pauly demonstrates the strong topological properties of the technologically relevant phase change materials Sb 2 Te 3 and Ge 2 Sb 2 Te 5 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 Bi 14 Rh 3 I 9 , 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.Inhaltsverzeichnis zu „Strong and Weak Topology Probed by Surface Science “
Introduction.- Fundamentals of Topological Insulators.- Experimental Methods.- Identification of Tellurium based Phase-Change Materials as Strong Topological Insulators.- Weak Topological Insulator.- Summary.
Autoren-Porträt von Christian Pauly
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.
Bibliographische Angaben
- Autor: Christian Pauly
- 2016, 1st ed. 2015, VIII, 166 Seiten, 53 farbige Abbildungen, Masse: 14,8 x 21 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3658118105
- ISBN-13: 9783658118105
- Erscheinungsdatum: 30.01.2016
Sprache:
Englisch
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