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Quantum Science on Strong Correlation

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Old topics

paper
Mar. 03, 2014
Dirac electron states formed at the heterointerface between a to pological-insulator and a conventional semiconductor
[Press release: February 20, 2014]

  • The research result related to QS2C was released.
  • Publication:
    R. Yoshimi, A. Tsukazaki, K. Kikutake, J. G. Checkelsky, K. S. Takahashi, M. Kawasaki and Y. Tokura
    "Dirac electron states formed at the heterointerface between a to pological-insulator and a conventional semiconductor"
    Nature Materials 13, 253–257 (20 February 2014)


paper
Jan. 29, 2014
Biskyrmion states and their current-driven motion in a layered manganite
[Press release: December 28, 2013]



paper
Jan. 29, 2014
Biskyrmion states and their current-driven motion in a layered manganite
[Press release: December 28, 2013]



paper
Jan. 29, 2014
Thermally Driven Ratchet Motion of a Skyrmion Microcrystal and Topological Magnon Hall Effect
[Press release: December 27, 2013]

  • The research result related to QS2C was released.
  • Publication:
    Masahito Mochizuki, Xiuzhen Yu, Shinichiro Seki, Naoya Kanazawa, Wataru Koshibae, Jiadong Zang, Maxim Mostovoy, Yoshinori Tokura, and Naoto Nagaosa.
    "Thermally Driven Ratchet Motion of a Skyrmion Microcrystal and Topological Magnon Hall Effect"
    Nature Materials doi: 10.1038/nmat3862 (26 January 2014)


Honors and Awards
Jan. 10, 2014
Dr. Yoshinori Tokura elected member of the Royal Swedish Academy of Sciences

  • On December 11, the Royal Swedish Academy of Sciences, a prestigious body which selects recipients of the Nobel Prizes in physics and chemistry, elected Dr. Yoshinori Tokura, Director of the RIKEN Center for Emergent Matter Science (CEMS), into its membership.
  • With this, Tokura became one of 175 non Swedish people from around the world to have been accepted into the ranks of the Academy, which was founded in 1739.
  • Tokura is head of CEMS, an institute in RIKEN dedicated to discovering more efficient technologies that will enable us to produce energy without putting a burden on the environment, as well as decrease our energy consumption. They are achieving this by combining advanced research in physics, chemistry and electronics in order to produce new technology such as highly efficient energy conversion devices and low-consumption electronics.
  • Detail and links are below;
  • RIKEN Official Website | News & Media : http://www.riken.jp/en/pr/topics/2014/20140109_1/
  • The Royal Swedish Academy of Science: http://www.kva.se/en/
  • The Royal Swedish Academy of Science | Press release: http://www.kva.se/en/News/News-2013/Tree-new-members-elected-to-the-Academy/


paper
Dec. 20, 2013
Detection of Berry’s Phase in a Bulk Rashba Semiconductor
[Press release: December 20, 2013]

  • The research result related to QS2C was released.
  • Publication:
    H. Murakawa, M. S. Bahramy, M. Tokunaga, Y. Kohama, C. Bell, Y. Kaneko, N. Nagaosa, H. Y. Hwang, Y. Tokura
    "Detection of Berry’s Phase in a Bulk Rashba Semiconductor"
    Science 342, 1490-1493 (20 December 2013)


paper
Dec. 12, 2013
Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric
[Press release: December 12, 2013]

  • The research result related to QS2C was released.
  • Publication:
    F. Kagawa, S. Horiuchi, N. Minami, S. Ishibashi, K. Kobayashi, R. Kumai, Y. Murakami, and Y. Tokura
    "Polarization Switching Ability Dependent on Multidomain Topology in a Uniaxial Organic Ferroelectric"
    Nano Letters doi:10.1021/nl403828u (12 December 2013)


Honors and Awards
Dec. 05, 2013
Yoshinori Tokura (Core Researcher), Director of RIKEN Center for Emergent Matter Science (CEMS), has been selected to receive a new honorary doctorate at the Uppsala University Faculty of Science and Technology.

  • On October 24, Dr. Yoshinori Tokura, Director of RIKEN Center for Emergent Matter Science (CEMS) have been selected to receive new honorary doctorates at the Uppsala University Faculty of Science and Technology. The awarding ceremony will be held on January 24.
  • Outline of this prize:
    Yoshinori Tokura, a professor at Tokyo University and research director at RIKEN, is one of the world's ten most-cited physicists over the last 30 years. His research targets a broad field in physics, chemistry, and materials research, including high-temperature superconducting materials and strongly correlated electron systems with spintronic and multiferroic properties.
  • Uppsala University: http://www.uu.se/
  • Uppsala University press release: http://www.uu.se/en/news/news-document/?id=2833&area=2,12,16&typ=artikel&na=&lang=en


Symposium
Nov. 22, 2013
FIRST International Symposium on “Topological Quantum Technology”
[The Online Registration is available now.]

  • FIRST International Symposium on “Topological Quantum Technology”
    Date: January 27-30, 2014
    Venue: Hongo campus of the University of Tokyo (Please check the detail on the official website.)
    Registration fee: Free
    Registration is available now on the official website below.
  • Official website : http://www.cems.riken.jp/2014first_sympo/index.html
  • Deadlines:
    Abstract Submission and registration (Poster) : December 20, 2013
    Registration (Participation Only) : January 15, 2014

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Symposium
Nov. 14, 2013
RIKEN-APW joint workshop “Highlights in condensed matter physics”
[The Online Registration is available now.]

  • RIKEN-APW joint workshop “Highlights in condensed matter physics”
    Date: January 23-25, 2014
    Venue: Okochi Hall, RIKEN, Wako, Saitama, Japan
    Registration fee: Free
    Registration is available now on the official website below.
  • Official website : http://www.riken.jp/qs2c/TF/2014_TF/index.html
  • Deadlines:
    Abstract Submission and registration (Poster) : December 19, 2013
    Registration (Participation Only) : January 19, 2014

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Symposium
Sept. 24, 2013
FIRST-QS2C Workshop on “Emergent Phenomena of Correlated Materials”
[The Online Registration deadline is Oct. 04, 2013]

  • FIRST-QS2C Workshop on “Emergent Phenomena of Correlated Materials”
    Date: November 13-16, 2013
    Venue: Shinagawa Intercity Hall (2-15-4 Konan, Minato-ku, Tokyo 108-6105, Japan)
    Registration fee: Free (Banquet isn’t included.)
  • Registration page / Official website : http://www.riken.jp/qs2c/2013WS/index.html
  • Deadlines:
    Registration/Banquet : October 4, 2013
    Abstract Submission : October 4, 2013

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paper
Sept. 11, 2013
Advances towards the high density/ low energy cost devices
–Theoretical design of the manipulation of swirling electronic spins(skyrmion)–
[Press release: September 09, 2013]



paper
Sept. 11, 2013
Controlling size and helicity of a spin-vortex skyrmion
–Towards power-saving spintronics memory devices–
[Press release: September 09, 2013]

  • Prof. Yoshinori Tokura at the Graduate School of Engineering of the University of Tokyo, graduate student Kiyou Shibata, and their collaborators have observed and analyzed a series of Mn1-xFexGe compounds by transmission electron microscopy.
  • The detail is below;
  • School of Engineering, The Univ. of Tokyo:
    http://www.t.u-tokyo.ac.jp/etpage/release/2013/2013090901.html
  • Publication:
    K. Shibata, X. Z. Yu, T. Hara, D. Morikawa, N. Kanazawa, K. Kimoto, S. Ishiwata, Y. Matsui & Y. Tokura
    "Towards control of the size and helicity of skyrmions in helimagnetic alloys by spin–orbit coupling"
    Nature Nanotechnology doi:10.1038/nnano.2013.174 (08 September 2013)


paper
Sept. 04, 2013
Discovery of the microwave rectification effect using nano-sized spin whirl “skyrmion”
–A new principle of a microwave response demonstrated–
[Press release: September 02, 2013]

  • Prof. Yoshinori Tokura, leading a FIRST program “Quantum Science on Strong Correlation”, graduate student Yoshihiro Okamura, Dr. Fumitaka Kagawa at the University of Tokyo and their colleagues discovered that the skyrmion possesses a new functionality, that is, the irradiation-direction-dependent absorption of microwaves. This functionality may open a new avenue for the skyrmion-based devices, such as a microwave rectifying device or an inductor with tunable magnetic permeability by applying an electric field.
  • The detail is below;
  • School of Engineering, The Univ. of Tokyo:
    http://www.t.u-tokyo.ac.jp/etpage/release/2013/2013090201.html
  • Publication:
    Y. Okamura, F. Kagawa, M. Mochizuki, M. Kubota, S. Seki, S. Ishiwata, M. Kawasaki, Y. Onose & Y. Tokura
    "Microwave magnetoelectric effect via skyrmion resonance modes in a helimagnetic multiferroic"
    Nature Communications 4, 2391 (30 August 2013)


Symposium
Aug. 28, 2013
FIRST-QS2C Workshop on “Emergent Phenomena of Correlated Materials”
[The Online Registration is available now.]

  • FIRST-QS2C Workshop on “Emergent Phenomena of Correlated Materials”
    Date: November 13-16, 2013
    Venue: Shinagawa Intercity Hall (2-15-4 Konan, Minato-ku, Tokyo 108-6105, Japan)
    Registration fee: Free (Banquet isn’t included.)
  • Registration page / Official website : http://www.riken.jp/qs2c/2013WS/index.html
  • Deadlines:
    Registration/Banquet : October 4, 2013
    Abstract Submission : October 4, 2013

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paper
Aug. 26, 2013
A Strained Organic Field-Effect-Transistor with a Gate-Tunable Superconducting Channel
[Press release: August 23, 2013]



paper
article
Aug. 02, 2013
Controlling spins by an electric field
–New possibility of WSe2 as a post-graphene material–
[Press release: July 29, 2013]

  • A group of researchers including Dr. H. Yuan, Professors R. Arita and Y. Iwasa, from Quantum Phase Electronic Center and Department of Applied Physics, University of Tokyo, in collaboration with Dr. M.S. Bahramy and Professor Nagaosa, the vice-president of CEMS, RIKEN, have succeeded in developing a state-of-the-art field-effect transistor, in which a strong electric field can be applied to WSe2, one of the post-graphene materials.
  • The detail is below:
  • School of Engineering, The Univ. of Tokyo:
    http://www.t.u-tokyo.ac.jp/etpage/release/2013/2013072901.html
  • Publication:
    Hongtao Yuan, Mohammad Saeed Bahramy, Kazuhiro Morimoto, Sanfeng Wu, Kentaro Nomura, Bohm-Jung Yang, Hidekazu Shimotani, Ryuji Suzuki, Minglin Toh, Christian Kloc, Xiaodong Xu, Ryotaro Arita, Naoto Nagaosa & Yoshihiro Iwasa
    "Zeeman-type spin splitting controlled by an electric field"
    Nature Physics doi:10.1038/nphys2691 (28 July 2013)


other
July 26, 2013
Putting the heat on semimetals
RIKEN RESEARCH / Highlight of the Month : Materials
[Published on July 26, 2013]



paper
article
July 25, 2013
Strain induced magnetization in strongly correlated electron insulator
–Control of spin/orbital ordering of correlated electrons by strain–
[Press release: July 11, 2013]



Honors and Awards
July 9, 2013
Dr. Hiroki Wadati received 2013 NIMS Conference Poster Presentation Award.

  • Dr. Hiroki Wadati (Lecturer of Quantum-Phase Electronics Center (QPEC), The Univ. of Tokyo) gave a poster presentation in 2013 NIMS Conference and received 2013 NIMS Conference Poster Presentation Award.
  • Title: “Phase competitions in Pr0.5Ca0.5MnO3/La0.5Sr0.5MnO3 superlattices”
  • 2013 NIMS Conference official website: http://www.nims.go.jp/nimsconf/2013/index.html


Honors and Awards
article
June 17, 2013
103rd Japan Academy Prize and Imperial Prize awarded to Professor Yoshinori Tokura.
The award ceremony was held on June 17 at the Japan Academy, Tokyo.

  • On March 12, Professor Yoshinori Tokura, Core Researcher of QS2C, was awarded the 103rd Japan Academy Prize and the Imperial Prize for his pioneering work on “strongly correlated electron materials”. The award ceremony was held on June 17 at the Japan Academy, Tokyo.
  • The Japan Academy:
    About The Imperial Prize and Japan Academy Prize:
    http://www.japan-acad.go.jp/en/activities/
  • RIKEN official website/ News(Mar. 15, 2013):
    “103rd Japan Academy Prize and Imperial Prize awarded to RIKEN ASI Emergent Materials Department Director Dr. Yoshinori Tokura”
    http://www.riken.go.jp/engn/r-world/topics/130315/index.html


paper
June 11, 2013
Discovery of an electronic glass state
–Major progress in understanding the vitrification mechanism–
[Press release: June 10, 2013]



paper
article
Apr. 22, 2013
Toward high efficiency thermoelectric material operating at low temperatures
–Extremely high electron mobility in a layered material with a silver nanosheet–
[Press release: Apr. 22, 2013]



other
Apr. 01, 2013
RIKEN Center for Emergent Matter Science (CEMS) has been launched.


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Update history

June 03, 2014 
Achievements have been updated.

May 14, 2014 

Apr. 01, 2014 

Mar. 13, 2014 

Mar. 12, 2014 

Mar. 06, 2014 

Mar. 04, 2014 

Mar. 03, 2014 

Feb. 21, 2014 

Feb. 18, 2014 

Feb. 17, 2014 

Jan. 29, 2014 

Jan. 10, 2014 
Topics has been updated.

Dec. 20, 2013 

Dec. 16, 2013 

Dec. 12, 2013 

Nov. 22, 2013 
Topics has been updated.

Nov. 19, 2013 

Nov. 07, 2013 

Nov. 06, 2013 

Oct. 10, 2013 

Oct. 07, 2013 

Oct. 02, 2013 

Sept. 30, 2013 

Sept. 27, 2013 

Sept. 26, 2013 

Sept. 24, 2013 
Topics has been updated. (The information of workshop was updated.)

Sept. 11, 2013 
Topics has been updated.

Sept. 04, 2013 

Sept. 04, 2013 

Aug. 28, 2013 

Aug. 26, 2013 

Aug. 08, 2013 

Aug. 07, 2013 

Aug. 02, 2013 
Topics has been updated.

Aug. 01, 2013 

July 29, 2013 

July 26, 2013 
Topics has been updated.

July 25, 2013 

July 17, 2013 

July 10, 2013 

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July 04, 2013 

July 03, 2013 

June 27, 2013 
The layout design of Achievements has been renewed.

June 26, 2013 
The layout design of "Home", "Old topics" and "Update history" have been renewed.

June 11, 2013 

June 06, 2013 

June 04, 2013 

May 14, 2013 

Apr. 30, 2013 

Apr. 24, 2013 

Apr. 22, 2013 
Topics has been updated.

Apr. 16, 2013 

Apr. 05, 2013 
Topics has been updated.