Web of Science, 高被引用文献,Density of States Scaling at the Semimetal to Metal Transition in Three Dimensional Topological InsulatorsKoji Kobayashi Tomi Ohtsuki Ken-Ichiro Imura Igor F. Herbut
Vincent Sacksteder   Tomi Ohtsuki   Koji Kobayashi   
PHYSICAL REVIEW APPLIED 3(6) 2015年6月 [査読有り]
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) 2015年2月 [査読有り]
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 ...
The quantum phase transition between the three dimensional Dirac semimetal and the diffusive metal can be induced by increasing disorder. Taking the system of a disordered Z(2) topological insulator as an important example, we compute the single p...
A global phase diagram of disordered weak and strong topological insulators is established numerically. As expected, the location of the phase boundaries is renormalized by disorder, a feature recognized in the study of the so-called topological A...
K. Kobayashi   T. Ohtsuki   K. Slevin   
LOCALISATION 2011: PROCEEDINGS OF THE SATELLITE CONFERENCE OF LT 26 11 114-119 2013年 [査読有り]
We have estimated the critical exponent describing the divergence of the localization length at the metal-quantum spin Hall insulator transition. The critical exponent for the metal-ordinary insulator transition in quantum spin Hall systems is kno...
Koji Kobayashi, Tomi Ohtsuki, Ken-Ichiro Imura(担当:分担執筆, 範囲:Chapter 4: Topological Matter in the Absence of Translational Invariance)
Wiley-Scrivener 2019年4月9日 (ISBN:9781119407294)
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 semimetal...
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 semimetal...