Topological quantum phase transition in magnetic topological insulator upon magnetization rotation

Minoru Kawamura, Masataka Mogi, Ryutaro Yoshimi, Atsushi Tsukazaki, Yusuke Kozuka, Kei S. Takahashi, Masashi Kawasaki, Yoshinori Tokura

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We report a continuous phase transition between quantum-anomalous-Hall and trivial-insulator phases in a magnetic topological insulator upon magnetization rotation. The Hall conductivity transits from one plateau of quantized Hall conductivity e2/h to the other plateau of zero Hall conductivity. The transition curves taken at various temperatures cross almost at a single point, exemplifying the critical behavior of the transition. The slope of the transition curves follows a power-law temperature dependence with a critical exponent of 0.61. This suggests a common underlying origin in the plateau transitions between the quantum anomalous Hall and quantum Hall systems, which is a percolation of one-dimensional chiral edge channels.

Original languageEnglish
Article number140404
JournalPhysical Review B
Volume94
Issue number14
DOIs
Publication statusPublished - 2018 Oct 22

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Kawamura, M., Mogi, M., Yoshimi, R., Tsukazaki, A., Kozuka, Y., Takahashi, K. S., Kawasaki, M., & Tokura, Y. (2018). Topological quantum phase transition in magnetic topological insulator upon magnetization rotation. Physical Review B, 94(14), [140404]. https://doi.org/10.1103/PhysRevB.98.140404