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Prof. Yoichi Ando, Ph.D.

Contact

Tel: +49-221-470-3570

Fax: +49-221-470-6708

Room: 227

E-mail: ando(at)ph2.uni-koeln.de

Secreteriat

Frau Carmen Handels

Tel: +49-(0)221-470-5829

Fax: +49-(0)221-470-6708

E-Mail: handels(at)ph2.uni-koeln.de

Curriculum Vitae

Present Position

Professor of Experimental Physics (Chair-holder), University of Cologne

Work Address

Institute of Physics II
University of Cologne
Zülpicher Straße 77, 50937 Köln, Germany

TEL: +49-(0)221-470-3570, FAX: +49-(0)221-470-6708
e-mail: ando@ph2.uni-koeln.de

Birth Year: 1964
Citizenship: Japanese
 
Education and Degrees

Ph.D. (Physics): February 1994, University of Tokyo

Master of Science (Physics): March 1989, University of Tokyo

Bachelor of Science (Physics): March 1987, University of Tokyo

 

Professional Career

2015- Full Professor (W3), Institute of Physics II, University of Cologne
2007-2015 Full Professor, Institute of Scientific and Industrial Research, Osaka University
1996-2007 Senior Research Scientist, Central Research Institute of Electric Power Industry
  (2004-2005 Department Head, Department of Materials Physics and Synthesis)
  (1997-2005 Visiting Associate Professor, Tokyo University of Science [adjunct])
1994-1996 Resident Visitor (postdoc), Bell Laboratories
1994-1994 Research Scientist, Central Research Institute of Electric Power Industry
1991-1994 Research Scientist, Superconductivity Research Laboratory, ISTEC
1989-1991 Associate Researcher, Central Research Institute of Electric Power Industry
 
Research Summary

The strength of Dr. Ando's research lies in the core strategy to perform both the state-of-the-art materials synthesis and difficult low-temperature experiments in a synergistic manner. Before 2007, he worked mainly on high-Tc superconductors, where his main achievements were (i) Discovery of insulating normal state and hidden metal-to-insulator crossover under 60-T magnetic fields, and (ii) Discovery of electron nematicity manifested in the in-plane resistivity anisotropy. Since 2007, he has been a pioneer in the fields of topological insulators (TIs) and topological superconductors, where his major contributions include (i) Discovery and developments of “bulk-insulating” TI materials, (ii) Experimental discovery of the topological superconductivity in CuxBi2Se3, and (iii) Experimental discovery of topological crystalline insulator. After moving to Cologne, he is expanding his research horizon into mesoscopic physics in topological materials, by employing nanofabrication techniques.

 

Major Community Services

  • Referee for Nature, Science, Reviews of Modern Physics, Physical Review Letters, Nature Physics, Nature Materials, PNAS, EPL, Physical Review B, Journal of the Physical Society of Japan, etc.

  • Co-Editor, EPL (Europhysics Letters) (2010-2018)

  • Program Committee, 28th International Conference on Low Temperature Physics (LT28, 2017)

  • International Advisory Board, Advanced Materials Interfaces (Wiley) (2014-2016)

  • International Advisory Committee, Materials and Mechanisms of Superconductivity Conference (M2S 2012, M2S 2015).

  • Committee member of the US National Research Council (NRC) Study on High Magnetic Field Research in the United States (2012-2013)

  • John Bardeen Prize Selection Committee (2009)

  • Program Committee, 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-HTSC-VIII, 2006)

 

Honors and Awards

2014

Thomson Reuters Highly Cited Researchers 2014
2014 Osaka Science Prize§ (Osaka City & Osaka Prefecture)
for Pioneering Research of Topological Insulators and Superconductors
2014 Inoue Prize for Science* (Inoue Foundation for Science)
for Pioneering Research of Topological Insulators and Superconductors
2013 The 17th Superconductivity Science and Technology Award (The Society of Non-Traditional Technology, Japan) for Theory and Demonstration of Topological Superconductors
2012 & 2014 Osaka University Presidential Award for Achievement in Research (Osaka University)
2006 JSPS Prize+ (Japan Society for the Promotion of Science) for Research on Competing
Electronic Phases and Hidden Order in High-Temperature Superconductors
2003 The 7th Superconductivity Science and Technology Award (The Society of Non-Traditional Technology, Japan) for Research on Electronic Structures and Transport Phenomena in High-Temperature Superconductors

§Osaka Science Prize is awarded each year to two scientists aged 50 or under, selected from all fields of natural science for their outstanding contributions accomplished in the Osaka area. The prize money is 1.5 million JPY.

*Inoue Prize for Science is awarded each year to five outstanding Japanese researchers under 50 years of age selected from all fields of natural science. The prize consists of 2 million JPY and a gold medal.

+ JSPS Prize is a prestigious award in Japan for outstanding mid-career researchers under 45 years of age. Each year, about 20 awardees are selected from all fields of academia, and the prize ceremony is attended by a member of the royal family. The prize consists of 1.1 million JPY and a silver medal.

Total Number of Publications: 320

Among them, Nature: 4
  Science: 3
  Nature Physics: 5
  Nature Materials: 1
  Physical Review Letters: 71
  Physical Review B: 123

Total Number of Citations in Web of Science (as of August 2016): 12,289

Hirsch's h Index in Web of Science (as of August 2016): 61

 For the latest publication statistics, please see the following Researcher ID page:

  • http://www.researcherid.com/rid/B-8163-2013

(Top 10 Most Cited Papers, as of August 2016)

390 citations: G. S. Boebinger, Yoichi Ando, A. Passner, T. Kimura, M. Okuya, J. Shimoyama, K. Kishio, K. Tamasaku, N. Ichikawa, and S. Uchida, ``Insulator-to-metal crossover in the normal state of La2-xSrxCuO4 at optimum doping", Phys. Rev. Lett. 77 (1996) 5417-5420.

365 citations: Michael Vershinin, Shashank Misra, S. Ono, Yasushi Abe, Yoichi Ando, and Ali Yazdani, ``Local Ordering in the Pseudogap State of the High-Tc Superconductor Bi2Sr2CaCu2O 8+δ", Science 303 (2004) 1995 - 1998.

343 citations: Yoichi Ando, G.S. Boebinger, A. Passner, Tsuyoshi Kimura, and Kohji Kishio, ``Logarithmic Divergence of both in-plane and out-of-plane normal-state resistivities of superconducting La2-xSrxCuO4 in the zero-temperature limit", Phys. Rev. Lett. 75 (1995) 4662-4665.

302 citations: Yoichi Ando, Kouji Segawa, Seiki Komiya, and A. N. Lavrov, ``Electrical resistivity anisotropy from self-organized one-dimensionality in high-temperature superconductors", Phys. Rev. Lett. 88 (2002) 137005-1 - 137005-4.

280 citations: Yoichi Ando, ``Topological Insulator Materials", J. Phys. Soc. Jpn. 82 (2013) 102001-(1-32)

271 citations: Kenjiro K. Gomes, Abhay N. Pasupathy, Aakash Pushp, Shimpei Ono, Yoichi Ando, and Ali Yazdani, ``Visualizing pair formation on the atomic scale in the high-Tc superconductor Bi2Sr2Ca2CuO 8+δ", Nature 447 (2007) 569 - 572.

264 citations Zhi Ren, A. A. Taskin, Satoshi Sasaki, Kouji Segawa, and Yoichi Ando, ``Large bulk resistivity and surface quantum oscillations in the topological insulator Bi2Te2Se", Phys. Rev. B 82 (2010) 241306(R)-(1-4).

229 citations: A. A. Taskin, A. N. Lavrov, and Yoichi Ando, ``Achieving fast oxygen diffusion in perovskites by cation ordering", Appl. Phys. Lett. 86 (2005) 091910-1 - 091910-3.

223 citations: Y. Tanaka, Zhi Ren, T. Sato, K. Nakayama, S. Souma, T. Takahashi, Kouji Segawa, and Yoichi Ando, ``Experimental realization of a topological crystalline insulator in SnTe'', Nature Physics 8 (2012) 800-803.

222 citations: Satoshi Sasaki, M. Kriener, Kouji Segawa, Keiji Yada, Yukio Tanaka, Masatoshi Sato, and Yoichi Ando, ``Topological Superconductivity in CuxBi2Se3'', Phys. Rev. Lett. 107 (2011) 217001-(1-5).

 

 

Notable Research Accomplishments

(In the following list, TC is the ``Times cited" in the Web of Science database as of August 2016)

Topological Insulators and Superconductors

  • Discovery of the first bulk-insulating 3D topological insulator Bi2Te2Se (2010 PRB (264 TC))

  • Experimental discovery of the topological superconductivity in CuxBi2Se3 (2011 PRL (222 TC))

  • Experimental discovery of topological crystalline insulator (2012 Nature Physics (223 TC))

  • Elucidation of topological protection in transport properties of topological insulator thin films (2012 PRL (142 TC))

  • Discovery of the most bulk-insulating 3D topological insulator Bi2-xSbxTe2-ySey
    (2011 PRL (141 TC), 2012 Nature Commun. (103 TC), 2011 PRB (100 TC))

  • Discovery of the first ternary chalcogenide topological insulator TlBiSe2 (2010 PRL (131 TC))

Transition Metal Oxides

  • Discovery of fast oxygen diffusion in cation-ordered layered perovskites for high-performance solid-oxide fuel cells (2005 APL (229 TC))

  • Elucidation of strong electron correlations in the thermoelectric material NaxCoO2
    (1999 PRB (173 TC))

  • Comprehensive research of giant-magnetoresistive oxide GdBaCo2O5+x
    (2005 PRB (176 TC), 2003 PRL (110 TC))

  • Discovery of the magnetic shape-memory effect in an antiferromagnet (2002 Nature (88 TC))

High-Temperature Superconducting Cuprates

  • Discovery of the insulating normal state under high magnetic fields (1995 PRL (343 TC))

  • Discovery of the hidden metal-insulator crossover in the normal state near optimum doping
    (1996 PRL (390 TC), 2000 PRL (164 TC))

  • Discovery of the electron nematic phase via in-plane resistivity anisotropy
    (2002 PRL (302 TC))

  • Elucidation of the metallic transport in the slightly hole-doped regime (2001 PRL (216 TC))

  • Clarification of the non-Fermi-liquid ground state manifested in the incoherent c-axis transport (1996 PRL (184 TC))

  • Promotion of international collaborations based on high-quality cuprate single crystals that resulted in more than 100 papers, among which 14 papers have been cited 100 times or more

Invited Reviews

  • Yoichi Ando, ``Topological Insulator Materials", J. Phys. Soc. Jpn. 82 (2013) 102001-(1-32). (280 TC)

  • Yoichi Ando and Liang Fu, Topological Crystalline Insulators and Topological Superconductors: From Concepts to Materials, Annu. Rev. Condens. Matter Phys. 6 (2015) 361-381. (33 TC)

  • Masatoshi Sato and Yoichi Ando, ``Topological Superconductors", arXiv:1608.03395 (commissioned by Rep. Prog. Phys.)


(29-August-2016)