JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 86(4) 044708 2017年4月 [査読有り]
Three-dimensional random electron systems undergo quantum phase transitions and show rich phase diagrams. Examples of the phases are the band gap insulator, Anderson insulator, strong and weak topological insulators, Weyl semimetal, and diffusive ...
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 85(12) 123706 2016年12月 [査読有り]
Random electron systems show rich phases such as Anderson insulator, diffusive metal, quantum Hall and quantum anomalous Hall insulators, Weyl semimetal, as well as strong/weak topological insulators. Eigenfunctions of each matter phase have speci...
PHYSICAL REVIEW B 94(23) 235414-1-235414-11 2016年12月 [査読有り]
Regarding three-dimensional (3D) topological insulators and semimetals as a stack of constituent twodimensional (2D) topological (or sometimes nontopological) systems is a useful viewpoint. Here, we perform a comparative study of the paradigmatic ...
Low-energy magnon bands in a two-dimensional spin-ice model become integer quantum magnon Hall bands under an out-of-plane field. By calculating the localization length and the two-terminal conductance of magnon transport, we show that the magnon ...
Topological properties are sometimes emergent or enforced by the breaking of translational invariance. Here, in this chapter we discuss dimensional crossover of topological properties in thin films of topological insulators (TI) and Weyl semi- met...
文部科学省の現代GP,グローバル社会における系統的科学英語教育の支援を受け,カリキュラム委員長として30科目以上にわたる表記の科目群を整えた。また実際に物理系の科目を,パワーポイント,WEBサイト,DVD(The mechanical universe and beyond..)を用い,リスニング,ライティング,リーディングを教えた。\nまた本プログラムは30科目以上の講義からなるが,そのカリキュラム委員長を務めた。さらに各種の電子教材を作成した。