Koji Kobayashi   Yukinori Yoshimura   Ken-Ichiro Imura   Tomi Ohtsuki   
Physical Review B - Condensed Matter and Materials Physics 92(23) 235407 2015年12月 [査読有り]
We show how the two-dimensional (2D) topological insulator evolves, by stacking, into a strong or weak topological insulator with different topological indices, proposing a new conjecture that goes beyond an intuitive picture of the crossover from...
Koji Kobayashi   Yukinori Yoshimura   Ken-Ichiro Imura   Tomi Ohtsuki   
PHYSICAL REVIEW B 92(23) 2015年12月 [査読有り]
We show how the two-dimensional (2D) topological insulator evolves, by stacking, into a strong or weak topological insulator with different topological indices, proposing a new conjecture that goes beyond an intuitive picture of the crossover from...
We numerically demonstrate a practical means of systematically controlling topological transport on the surface of a three-dimensional topological insulator, by introducing strong disorder in a layer of depth d extending inward from the surface of...
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 16(1) 14403 2015年2月 [査読有り][招待有り]
The concept of the topological insulator (TI) has introduced a new point of view to condensedmatter physics, relating a priori unrelated subfields such as quantum (spin, anomalous) Hall effects, spin-orbit coupled materials, some classes of nodal ...
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。