RESEARCH

I have intensively studied thin films growth of oxides, topological insulators, and its heterostructures. By collaborating with RIKEN CEMS group, we have achieved high quality (BiSb)₂Te₃ thin films grown by molecular-beam epitaxy. Quantum Hall effect in (BiSb)₂Te₃ and quantum anomalous Hall effect in Cr-doped (BiSb)₂Te₃ have been observed by the application of electric-field via MIS-FET structure. In this project, we would like to focus on exploration of novel physical phenomena in Bi₂Se₃-based heterostructures with doping various kinds of impurities. Toward the specific objective, we plan to perform effective collaboration with high-resolution angle-resolved photoemission spectroscopy and thin films growth technique.

EDUCATION

2000

Bachelor of Engineering, Tokyo Institute of Technology

2002

Master of Engineering, Tokyo Institute of Technology

2005

Ph.D. (Chemistry), Tohoku University

PROFESSIONAL EXPERIENCE

2005

Post-Doctoral research fellow, Institute for Materials Research (IMR), Tohoku University.

2006

JSPS Young research Fellow (PD), IMR, Tohoku University.

2007

Assistant Professor, IMR, Tohoku University.

2010

Lecturer for FIRST project, QPEC, University of Tokyo.

2012

Associate Professor, Department of Advanced Materials Science, University of Tokyo

2013

Professor, IMR, Tohoku University.

HONORS AND AWARDS

2008

The 48th Harada Young Research Award

2012

The 7th Condensed-Matter Science Prize

SELECTION OF PUBLICATIONS

"Electric-field-induced superconductivity in electrochemically-etched ultrathin FeSe films grown on SrTiO₃ and MgO"
J. Shiogai, Y. Ito, T. Mitsuhashi, T. Nojima and A. Tsukazaki
Nature Physics 12, 42-47 (Jan. 2016).
DOI: 10.1038/nphys3530

"Quantum Hall effect on top and bottom surface states of the topological insulator thin films"
R. Yoshimi, A. Tsukazaki, Y. Kozuka, J. Falson, K. S. Ta
kahashi, J. G. Checkelsky, N. Nagaosa, M. Kawasaki and Y. Tokura
Nature Communications 6, 6627-1-6 (Apr. 2015).
DOI: 10.1038/ncomms7627

"Dirac electron states formed at heterointerface between a topological-insulator and a conventional semiconductor"
R. Yoshimi, A. Tsukazaki, K. Kikutake, J. G. Checkelsky, K. S. Takahashi, M. Kawasaki and Y. Tokura
Nature Materials 13, 253- 257 (2014).
DOI: 10.1038/nmat3885

"Quantum Hall-effect in polar oxide heterostructure"
A. Tsukazaki, A. Ohtomo, T. Kita, Y. Ohno, H. Ohno and M. Kawasaki
Science 315, 1388-1391 (2007).
DOI: 10.1126/science.1137430

"Repeated temperature modulation epitaxy for p-type doping and light-emitting diode based on ZnO"
A. Tsukazaki, A. Ohtomo, t. Onuma, M. Ohtani, T. Makino, M. Sumiya, K. Ohtani, S. F. Chichibu, S. Fuke, Y. Segawa, H. Ohno, H. Koinuma and M. Kawasaki
Nature Materials 4, 42-46 (Jan. 2005).
DOI: 10.1038/nmat1284