Control of topological phase transitions in Dirac semimetal films by exchange fields

Fei Yang; Hai Long Wang; Hui Pan

doi:10.1088/1674-1056/26/1/017102

Control of topological phase transitions in Dirac semimetal films by exchange fields

Fei Yang
, Hai Long Wang^*
, Hui Pan

^*此作品的通讯作者

物理学院

Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

The exchange field effects on topological Dirac semimetal (DSM) films are discussed in this article. A topological phase transition can be controlled by tuning the exchange field together with the quantum confinement effects. What is more interesting is that the system can transit into the quantum anomalous Hall (QAH) state from the topologically trivial state (ℤ₂ = 0) or from the topologically nontrivial state (ℤ₂ = 1), depending on the thickness of the DSM films. This provides a useful mechanism to realize the QAH state from the DSM.

源语言	英语
文章编号	017102
期刊	Chinese Physics B
卷	26
期	1
DOI	https://doi.org/10.1088/1674-1056/26/1/017102
出版状态	已出版 - 1月 2017

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title = "Control of topological phase transitions in Dirac semimetal films by exchange fields",

abstract = "The exchange field effects on topological Dirac semimetal (DSM) films are discussed in this article. A topological phase transition can be controlled by tuning the exchange field together with the quantum confinement effects. What is more interesting is that the system can transit into the quantum anomalous Hall (QAH) state from the topologically trivial state (ℤ2 = 0) or from the topologically nontrivial state (ℤ2 = 1), depending on the thickness of the DSM films. This provides a useful mechanism to realize the QAH state from the DSM.",

keywords = "Dirac semimetal, exchange field, quantum anomalous Hall state, quantum spin Hall state",

author = "Fei Yang and Wang, \{Hai Long\} and Hui Pan",

note = "Publisher Copyright: {\textcopyright} 2017 Chinese Physical Society and IOP Publishing Ltd.",

year = "2017",

month = jan,

doi = "10.1088/1674-1056/26/1/017102",

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N2 - The exchange field effects on topological Dirac semimetal (DSM) films are discussed in this article. A topological phase transition can be controlled by tuning the exchange field together with the quantum confinement effects. What is more interesting is that the system can transit into the quantum anomalous Hall (QAH) state from the topologically trivial state (ℤ2 = 0) or from the topologically nontrivial state (ℤ2 = 1), depending on the thickness of the DSM films. This provides a useful mechanism to realize the QAH state from the DSM.

AB - The exchange field effects on topological Dirac semimetal (DSM) films are discussed in this article. A topological phase transition can be controlled by tuning the exchange field together with the quantum confinement effects. What is more interesting is that the system can transit into the quantum anomalous Hall (QAH) state from the topologically trivial state (ℤ2 = 0) or from the topologically nontrivial state (ℤ2 = 1), depending on the thickness of the DSM films. This provides a useful mechanism to realize the QAH state from the DSM.

KW - Dirac semimetal

KW - exchange field

KW - quantum anomalous Hall state

KW - quantum spin Hall state

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JO - Chinese Physics B

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Control of topological phase transitions in Dirac semimetal films by exchange fields

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