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Topological states on interfaces pro...

Takahashi, Ryuji.

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Topological states on interfaces protected by symmetry

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Topological states on interfaces protected by symmetry/ by Ryuji Takahashi.
作者:	Takahashi, Ryuji.
出版者:	Tokyo :Springer Japan : : 2015.,
面頁冊數:	xii, 90 p. :ill., digital ;24 cm.
內容註:	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.
Contained By:	Springer eBooks
標題:	Interfaces (Physical sciences) -
電子資源:	http://dx.doi.org/10.1007/978-4-431-55534-6
ISBN:	9784431555346 (electronic bk.)

Topological states on interfaces protected by symmetry
Takahashi, Ryuji.

Topological states on interfaces protected by symmetry[electronic resource] /by Ryuji Takahashi. - Tokyo :Springer Japan :2015. - xii, 90 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

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.

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.

ISBN: 9784431555346 (electronic bk.)

Standard No.: 10.1007/978-4-431-55534-6doiSubjects--Topical Terms:

601059
Interfaces (Physical sciences)

LC Class. No.: QC173.4.I57

Dewey Class. No.: 530.417

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520 $a 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.
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