The interplay between non-Hermiticity and disorder plays an important role in condensed matter physics. Here, we report the universal critical behaviors of the Anderson transitions driven by non-Hermitian disorders for a three-dimensional (3D) And...
Koji Kobayashi   Miku Wada   Tomi Ohtsuki   
Phys. Rev. Research 2(6) 022061-1-022061-6 2020年6月 [査読有り]
We study the dynamics of Dirac and Weyl electrons in disordered point-node semimetals. The ballistic feature of the transport is demonstrated by simulating the wave-packet dynamics on lattice models. We show that the ballistic transport survives u...
Journal of the Physical Society of Japan 89(2) 022001-1-022001-18 2020年2月 [査読有り][招待有り]
Applications of neural networks to condensed matter physics are becoming popular and beginning to be well accepted. Obtaining and representing the ground and excited state wave functions are examples of such applications. Another application is an...
Xunlong Luo   Baolong Xu   Tomi Ohtsuki   Ryuichi Shindou   
Physical Review B 101(2) 020202(R)-020202(R) 2020年1月 [査読有り]
Identifying unconventional quantum phase transitions is one of the most fundamental subjects in quantum physics. To this end, critical exponents in disorder-driven quantum phase transitions in Weyl semimetals and symmetry-protected topological pha...
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。