Laser-induced Phase Transitions of Topological Kondo Insulators

• 高三, 和晃

• 中川, 大也

• 川上, 則雄

抄録

In this paper, we theoretically investigate how laser fields change the nature of topological Kondo insulators(TKIs). By employing a prototypical model of TKIs, we treat the effect of the laser fields with Floquet theory, which gives effective description under high frequency laser fields. We derive the effective model of TKIs under the laser irradiation and discuss its topological properties. We demonstrate a possible realization of Floquet Chern insulators specified by various values of Chern number and reveal how the topological phase changes with increasing the laser light intensity. Furthermore, it is shown that Floquet Weyl semimetals, which have some pairs of Weyl nodes protected topologically, can emerge in the three-dimensional case. We explain how the Weyl nodes are created with varying the strength of the laser field.

20th International Conference on Magnetism, ICM 2015

収録刊行物

• Physics Procedia

  Physics Procedia 75 447-454, 2015

  Elsevier B.V.

キーワード

• photo-induced phase transition
• topological matter
• topological Kondo insulator
• Weyl semimetal

詳細情報

• CRID: 1050845760765840640
• NII論文ID: 120005822749
• ISSN: 18753892
• DOI: 10.1016/j.phpro.2015.12.055
• HANDLE: 2433/216134
• Web Site: https://api.elsevier.com/content/article/PII:S1875389215016946?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S1875389215016946?httpAccept=text/plain
• 本文言語コード: en
• 資料種別: journal article
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