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Motohiko Ezawa

Motohiko Ezawa

Lecturer, Department of Applied Physics, The university of Tokyo

Field of Specialty:
Theoretical condensed matter physics
Specific Topics:
Theory of topological materials and topological devices

E-mail : ezawa[at]ap.t.u-tokyo.ac.jp

RESEARCH

My major research interest is about topological monolayer materials. I have proposed various ideas on topological spin-valleytonics, topological field-effect-transistors and perfect spin filters. I have also studied skyrmions in magnetic thin films. I have proposed skyrmion logic gates and a conversion mechanism between a skyrmion and a domain-wall pair.
In this project, I study topological semimetals such as Weyl and loop-node semimetals. I will predict new properties of three dimensional honeycomb systems generalizing the results on two dimensional honeycomb systems. I search for novel topological phases based on new types of crystalline symmetries. I will propose topological devices based on topological materials.

EDUCATION

2005
Bachelor of Science (Physics), University of Tokyo
2007
Master of Science (Physics), University of Tokyo
2010
Ph.D. (Science), University of Tokyo

PROFESSIONAL EXPERIENCE

2007
JSPS Fellow (DC1)
2007
Assistant Professor, Department of Applied Physics, University of Tokyo.
2015
Lecturer, Department of Applied Physics, University of Tokyo

HONORS AND AWARDS

2012
The 6th Young Scientist Award of the Physical Society of Japan
2012
The 28th Inoue Research Award for Young Scientists
2014
The Young Scientists’ Prize; The Commendation for Science and Technology by
the Minister of Education,Culture, Sports, Science and Technology

SELECTION OF PUBLICATIONS

"Loop-nodal and Point-nodal Semimetals in Three-dimensional Honeycomb Lattices"
M. Ezawa
Physical Review Letters 116, 127202-1-5 (Mar. 2016)
DOI: 10.1103/PhysRevLett.116.127202

"Magnetic bilayer-skyrmions without skyrmion Hall effect"
X. Zhang, Y. Zhou and M. Ezawa
Nature Communications 7, 10293-1-7 (Jan. 2016).
DOI: 10.1038/ncomms10293

"Antiferromagnetic Topological Superconductor and Electrically Controllable Majorana Fermions"
M. Ezawa
Physical Review Letters 114 056403-1-5 (Feb. 2015)
DOI: 10.1103/PhysRevLett.114.056403

"A reversible conversion between a skyrmion and a domain-wall pair in junction geometry"
Y. Zhou and M. Ezawa
Nature Communications 5, 4652-1-8 (Aug. 2014).
DOI: 10.1038/ncomms5652

"Photo-Induced Topological Phase Transition and Single Dirac-Cone State in Silicene"
M. Ezawa
Physical Review Letters 110, 026603-1-4 (Jan. 2013).
DOI: 10.1103/PhysRevLett.110.026603

"Valley-Polarized Metals and Quantum Anomalous Hall Effect in Silicene"
M. Ezawa
Physical Review Letters 109, 055502-1-5 (Aug. 2012)
DOI: 10.1103/PhysRevLett.109.055502