Topological Quantum Phenomena in Condensed Matter with Broken Symmetries

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Yoshiteru Maeno

Yasuhiro ASANO

Associate Professor, Department of Applied Physics, Hokkaido University
Field of Specialty:
Theory of condensed matter physics
Topics of Research:
(A01) Novel Edge Phenomena in Superconductors with Broken Time-Reversal Symmetry
Specific Topics:
Quantum transport phenomena in superconducting nanostructures
■ Laboratory Website

RESEARCH

I have been working on theory of the quantum transport in superconducting nanostructures.
Currently I am interested in characteristic phenomena of spin-triplet superconductors
such as the anomalous proximity effect, spin supercurrent, and unusual response to
electromagnetic field.

In this project, I am going to study quantum transport through edge states
which appear at a surface of topologically nontrivial superconductors such as
a noncentrosymmetric superconductor or a chiral one.
In addition to this, I also seek exotic phenomena peculiar to spin-triplet
superconductors in collaboration with experimental groups.

EDUCATION

1989
B. S. (Physics), Nagoya University
1995
Ph.D. (Physics), Nagoya University

PROFESSIONAL EXPERIENCE

1995
Postdoctoral research fellow, Delft University of Technology (The Netherlands)
1995-2007
Assistant, Faculty of Engineering, Hokkaido University
2007-Present
Lecturer, Department of Applied Science and Engineering, Hokkaido University

SELECTION OF PUBLICATIONS

"Tunneling between Two Helical Superconductors via Majorana Edge Channels",
Y. Asano, Y. Tanaka, and N. Nagaosa,
Physical Review Letters 105, 056402(1)-(4) (2010).

"Josephson Effect due to Odd-frequency Pairs in Diffusive Half Metals",
Y. Asano, Y. Tanaka, and A. A. Golubov,
Physical Review Letters 98, 107002(1)-(4)(2007).

"Conductance Spectroscopy of Spin-triplet Supercouductors",
Y. Asano, Y. Tanaka, A. A. Golubov, and S. Kashiwaya,
Physical Review Letters 99, 067005(1)-(4) (2007).

"DC Josephson Effect in SNS Junctions of Anisotropic Superconductors",
Y. Asano,
Physical Review B 64, 224515(1)-(9) (2001).

"Magnetoconductance Oscillations in Ballistic Semiconductor-Superconductor Junctions",
Y. Asano,
Physical Review B 61, 1732-1736 (2000).

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