Strong and Weak Topology Probed by Surface Science Topological Insulator Properties of Phase Change Alloys and Heavy Metal Graphene
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Sprache:Englisch
Fr. 73.90
inkl. gesetzl. MwSt.,
Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
30.01.2016
Abbildungen
VIII, 166 p. 77 illus., 53 illus. in color.
Verlag
Springer Fachmedien Wiesbaden GmbHSeitenzahl
166
Maße (L/B/H)
21/14.8/1 cm
Gewicht
236 g
Auflage
1st ed. 2015
Sprache
Englisch
ISBN
978-3-658-11810-5
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.
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