理工学部 機能創造理工学科

Koji Kobayashi

  (小林 浩二)

Profile Information

Affiliation
Post Doctor, Faculty of Science and Technology Department of Engineering and Applied Sciences, Sophia University
Degree
Doctor of Philosophy in Physics(Sep, 2011, Sophia University)
Master of Science(Mar, 2009, Sophia University)
Bachelor of Science(Mar, 2007, Sophia University)

Researcher number
10711905
ORCID ID
 https://orcid.org/0000-0001-7223-607X
J-GLOBAL ID
201301051911685803
Researcher ID
U-1205-2019
researchmap Member ID
7000004743

External link

I am a theoretical/computational physicist. My main interest is the quantum transport and quantum critical phenomena in disordered topological systems.


Education

 3

Committee Memberships

 1

Papers

 22

Major Misc.

 28

Books and Other Publications

 2
  • Koji Kobayashi, Tomi Ohtsuki, Ken-Ichiro Imura (Role: Contributor, Chapter 4: Topological Matter in the Absence of Translational Invariance)
    Wiley-Scrivener, Apr 9, 2019 (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 semimetals, electronic properties on the surface of TI nanoparticles and TI nanowires as a constrained electronic system. To discuss the effects of disorder is another highlight of this chapter. We cast on the unusual robustness of Dirac and Weyl semimetal phases against disorder, then the discussion is turned to a novel type of quantum criticality emergent from this unusual robustness, leading us to formulate the scaling theory of semimetal-metal transition. The concept of topological matter dose not fade under circumstances of absent translational invariance; it is on the contrary, emergent or enforced under such circumstances.
  • Koji Kobayashi, Tomi Ohtsuki, Ken-Ichiro Imura (Role: Joint author)
    Wiley online library, Mar 12, 2019 (ISBN: 9781119407317)
    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 semimetals, electronic properties on the surface of TI nanoparticles and TI nanowires as a constrained electronic system. To discuss the effects of disorder is another highlight of this chapter. We cast on the unusual robustness of Dirac and Weyl semimetal phases against disorder, then the discussion is turned to a novel type of quantum criticality emergent from this unusual robustness, leading us to formulate the scaling theory of semimetal-metal transition. The concept of topological matter dose not fade under circumstances of absent translational invariance; it is on the contrary, emergent or enforced under such circumstances.

Presentations

 68

Teaching Experience

 1

Professional Memberships

 1

Research Projects

 4