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Topological States on Interfaces Protected by Symmetry [[electronic resource] /] / by Ryuji Takahashi



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Autore: Takahashi Ryuji Visualizza persona
Titolo: Topological States on Interfaces Protected by Symmetry [[electronic resource] /] / by Ryuji Takahashi Visualizza cluster
Pubblicazione: Tokyo : , : Springer Japan : , : Imprint : Springer, , 2015
Edizione: 1st ed. 2015.
Descrizione fisica: 1 online resource (98 p.)
Disciplina: 530.417
Soggetto topico: Phase transitions (Statistical physics)
Superconductivity
Superconductors
Surfaces (Technology)
Thin films
Solid state physics
Surfaces (Physics)
Interfaces (Physical sciences)
Phase Transitions and Multiphase Systems
Strongly Correlated Systems, Superconductivity
Surfaces and Interfaces, Thin Films
Solid State Physics
Surface and Interface Science, Thin Films
Note generali: 'Doctoral Thesis accepted by Tokyo Institute of Technology, Tokyo, Japan."
Nota di bibliografia: Includes bibliographical references at the end of each chapters.
Nota di contenuto: Introduction -- Topological Invariant and topological Phases -- Gapless Interface States between Two Topological Insulators.- Weyl Semimetals in a Thin Topological Insulator -- Summary and outlook -- Properties of the Chern numbers -- Calculation for the interface Fermi loops.
Sommario/riassunto: In this book, the author theoretically studies two aspects of topological states. First, novel states arising from hybridizing surface states of topological insulators are theoretically introduced. As a remarkable example, the author shows the existence of gapless interface states at the interface between two different topological insulators, which belong to the same topological phase. While such interface states are usually gapped due to hybridization, the author proves that the interface states are in fact gapless when the two topological insulators have opposite chiralities. This is the first time that gapless topological novel interface states protected by mirror symmetry have been proposed. Second, the author studies the Weyl semimetal phase in thin topological insulators subjected to a magnetic field. This Weyl semimetal phase possesses edge states showing abnormal dispersion, which is not observed without mirror symmetry. The author explains that the edge states gain a finite velocity by a particular form of inversion symmetry breaking, which makes it possible to observe the phenomenon by means of electric conductivity.
Titolo autorizzato: Topological States on Interfaces Protected by Symmetry  Visualizza cluster
ISBN: 4-431-55534-X
Formato: Materiale a stampa
Livello bibliografico Monografia
Lingua di pubblicazione: Inglese
Record Nr.: 9910300436203321
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Serie: Springer Theses, Recognizing Outstanding Ph.D. Research, . 2190-5053