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Yoshiteru Maeno
Professor, Department of Physics, Kyoto University
Quantum Materials Lab. Department of Physics, Kyoto University, Kyoto 606-8502, Japan
Phone&Fax: 81+75-753-3783 E-mail: maeno@scphys.kyoto-u.ac.jp
Field of Speciality: Low-Temperature Physics, Condensed-Matter Physics, Superconductivity


March 1979
B.Sc. in Physics, Kyoto University
thesis title: "Vortex Refrigerator"
thesis advisors: Prof. A. Hirai and Dr. T. Mizusaki
December 1980 
M.S. in Physics, University of California, San Diego
June 1984 
Ph.D. in Physics, University of California, San Diego
thesis title: "Oscillatory Convection in a Dilute 3He-Superfluid 4He Solution"
thesis advisor: Prof. J.C.Wheatley

Professional Employment

August 1984
Collaborator, Los Alamos National Laboratory, USA
October 1984
Research Associate, Department of Physics, Hiroshima University
June 1989
Associate Professor, Department of Physics, Hiroshima University
April 1996
Associate Professor, Department of Physics, Kyoto University
May 2001
Professor, International Innovation Center and Department of Physics, Kyoto University.
May 2006
Professor, Department of Physics, Kyoto University
June 1988
- May 1989 
Visiting Scientist, IBM Research, Ruschlikon (Zurich), Switzerland


Superconductivity Science and Technology Award (co-awarded with M.Sigrist)
Ryogo Kubo Memorial Award
Japan IBM Science Award
Daiwa-Adrian Prize (awarded for the Japan-UK collaboration by Y.Maeno and A.P. Mackenzie)
Thomson-Japan Research Front Award (based on ISI Web of Science citations in 1998-2003, awarded to 16 Japanese scientists in all areas of sciences.)
Bernd T. Matthias Prize (Link)

For the 1994 discovery and subsequent purification of Sr2RuO4 that creates a unique platform for revealing decisively some unusual features of superconductivity.
The Texas Center for Superconductivity at the University of Houston

Nishina Memorial Prize (Link)

Discovery of Spin-Triplet Superconductor - Ruthenium Oxide

The medal with Purple Ribbon from the Government of Japan

International Assignments

Organizing committee member of Japan-America Frontiers of Science (JAFoS)
Symposium, National Academy of Science (NAS, USA) and Japan Society for Promotion of Science (JSPS, Japan).
Foreign Associate of Canadian Institute of Advanced Research (CIAR), Superconductivity Program.
2003-2012- Foreign
Associate of Canadian Institute for Advanced Research (CIAR, *CIFAR*), Quantum Materials Program

Field of Study and Main Achievements

Discovery of superconductivity in the ruthenium oxide Sr2RuO4 .

Domestic and international collaborations with over 70 groups in 15 countries by providing high-quality crystalline samples lead to the discovery and confirmations of spin-triplet superconductivity in Sr2RuO4. Further studies are still needed to fully prove the existence of spin-triplet superconductivity. This superconductor is considered as a leading candidate of a topological superconductor, which would exhibit novel phenomena also applicable to quantum computing.

Currently, the leader of a national research project: "*Topological Quantum Phenomena *in Condensed Matter with Broken Symmetries", (July 2010-March 2015), a Grant-in-Aid for Scientific Research on Innovative Areas, MEXT, Japan. http://www.topological-qp.jp/english/index.html

This project aims to develop a revolutionary viewpoint of materials by establishing phenomena emerging from topological quantum state  of matter found in some special superconductors, superfluids, and insulators.

As an example, the surface of a topological insulator is predicted to exhibit metallic conductivity with spontaneous spin current circulating without energy dissipation. Topological materials including such topological superconductors and topological insulators are envisaged to be applied to devices for future technology.


"Evaluation of Spin-Triplet Superconductivity in Sr2RuO4",
Y. Maeno
, S. Kittaka, T. Nomura, S. Yonezawa, and K. Ishida, Journal of the Physical Society of Japan 81, 011009-1-29 (Jan. 2012).

"Topological competition of superconductivity in Pb/Ru/Sr2RuO4 junctions",
T. Nakamura, R. Nakagawa, T. Yamagishi, T. Terashima, S. Yonezawa, M. Sigrist, Y. Maeno,
Physical Review B 84, 060512(R)-1-4 (Aug. 2011).

"Observation of half-height magnetization steps in Sr2RuO4",
J. Jang, D.G. Ferguson, V. Vakaryuk, R. Budakian, S.B. Chung, P.M. Goldbart, Y. Maeno,
Science *311*, 186-188 (Jan. 2011).

"Higher-Tc Superconducting Phase in Sr2RuO4 Induced by Uniaxial Pressure",
S. Kittaka, H. Taniguchi, S. Yonezawa, H. Yaguchi, and Y. Maeno,
Phys. Rev. B 81, 180510(R), (May 2010).

"High Resolution Polar Kerr Effect Measurements of Sr2RuO4: Evidence for Broken Time-Reversal Symmetry in the Superconducting State",
J. Xia, Y. Maeno, P. T. Beyersdorf, M. M. Fejer, and A. Kapitulnik,
Phys. Rev. Lett. 97, 167002-1-4 (Oct. 2006).

"Determination of the Superconducting Gap Structure in All Bands of the Spin-Triplet Superconductor Sr2RuO4",
K. Deguchi, Z. Q. Mao, and Y. Maeno,
J. Phys. Soc. Jpn. 73, 1313-1321 (May 2004).

"The Superconductivity of Sr2RuO4 and the Physics of Spin-Triplet Paring",
A.P. Mackenzie and Y. Maeno,
Reviews of Modern Physics 75, 657-712 (April 2003).

"Magnetic Field-Turned Quantum Criticality in the Metallic Ruthenate Sr3Ru2O7",
S.A. Grigera, R.S. Perry, A.J. Schofield, M. Chiao, S.R. Julian, G.G. Lonzarich, S.I. Ikeda, Y. Maeno, A.J. Millis, and A.P. Mackenzie, Science 294, 329-332 (Oct. 2001).

"Spin-Triplet Superconductivity in Sr2RuO4 Identified by 17O Knight Shift",
K. Ishida, H. Mukuda, Y. Kitaoka, A. Asayama, Z. Q. Mao, Y. Mori, and Y. Maeno,
Nature 396, 658-660 (Dec. 1998).

"Enhancement of Superconductivity of Sr2RuO4 to 3 K by Embedded Metallic Microdomains",
Y. Maeno, T. Ando, Y. Mori, E. Ohmichi, S. Ikeda, S. NishiZaki, and S. Nakatsuji,
Phys. Rev. Lett. 81, 3765-3768 (Oct. 1998).

"Time-Reversal Symmetry Breaking Superconductivity in Sr2RuO4",
G. M. Luke, Y. Fudamoto, K.M. Kojima, M.I. Larkin, J. Merrin, B. Nachumi, Y. J. Uemura,
Y. Maeno, Z. Q. Mao, Y. Mori, H. Nakamura, and M. Sigrist,
Nature 394, 558-561 (Aug. 1998).

"Superconductivity in a Layered Perovskite without Copper",
Y. Maeno, H. Hashimoto, K. Yoshida, S. Nishizaki, T. Fujita, J. G. Bednorz, and F. Lichtenberg,
Nature 372, 532-534 (Dec. 1994).

"Effects of Th-Doping on Structural and Superconductive Properties of La2-xBaxCuO4",
Y. Maeno, N. Kakehi, M. Kato, and T. Fujita,
Phys. Rev. B 44, 7753-7756 (Oct. 1991).

"A New Series of Compounds in the T* Structure : La2-x-zLnzSrxCuO4-y (Ln = Eu, Gd, Tb and Dy)",
Y. Maeno, F. Lichitenberg, T. Williams, J. Karpinski, and J.G. Bednorz,
Jpn. J. Appl. Phys. 28, L926-L929 (June 1989).

"Substitution for Copper in a High-Tc Superconductor YBa2Cu3O7-δ",
Y. Maeno, T. Tomita, M. Kyogoku, S. Awaji, Y. Aoki, K. Hoshino, A. Minami, and T. Fujita,
Nature 328, 512-514 (Aug. 1987).

"Transition to Oscillatory Convection in a 3He-Superfluid- 4He Mixture",
Y. Maeno, H. Haucke, and J. C. Wheatley,
Phys. Rev. Lett. 54, 340-342 (Jan. 1985).