Chiral Edge Conduction on Domain Walls of a Magnetic Topological Insulator

• Yasuda Kenji

  東京大学大学院工学系研究科

• Tsukazaki Atsushi

  東北大学金属材料研究所

• Tokura Yoshinori

  東京大学大学院工学系研究科 理化学研究所創発物性科学研究センター

Bibliographic Information

Other Title

• 磁性トポロジカル絶縁体の磁壁に生じるカイラルエッジ伝導
• ジセイ トポロジカル ゼツエンタイ ノ ジヘキ ニ ショウジル カイラルエッジ デンドウ

Abstract

Topological phases of matter have been extensively studied both theoretically and experimentally for their characteristic band structures and exotic transport phenomena. Here, we review quantum anomalous Hall effect as one such example from the viewpoint of topological phases and related experimental results. Quantum anomalous Hall effect has been observed in a magnetic topological insulator Cr doped (Bi_1-y Sb_y)₂Te₃ thin films, where the spontaneous magnetization induces one-dimensional chiral transport at the edge of the sample. Recent experiments have demonstrated the existence of the chiral edge conduction also along the magnetic domain wall in the sample. By introducing Landauer Büttiker formula, the one-to-one correspondence between the fabricated domain wall and the chiral edge conduction was confirmed. This enables us to construct reconfigurable dissipationless circuit with the control of the domain structure.

Journal

• Butsuri

  Butsuri 73 (9), 640-647, 2018-09-05

  The Physical Society of Japan

Keywords

• 量子ホール効果・量子異常ホール効果
• トポロジカル絶縁体・磁性トポロジカル絶縁体

Details

• CRID: 1390564238087731328
• NII Article ID: 130007638827
• NII Book ID: AN00196952
• DOI: 10.11316/butsuri.73.9_640
• ISSN: 24238872
• ISSN: 00290181
• NDL BIB ID: 029196802
• Web Site: http://id.ndl.go.jp/bib/029196802
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I029196802
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed