Centers & Labs

RIKEN Center for Emergent Matter Science

Spin Physics Theory Research Team

Team Leader: Gen Tatara (D.Sci.)
Gen  Tatara(D.Sci.)

Our aim is to explore novel spin-related effects with extremely high efficiency in condensed matters. We thus contributes to development of spintronics, a technology using spin as well as charge of electrons, and to realization of ultrafast and high-density information technology with low energy consumption. Our particular interest is at present in a strong quantum relativistic effect in solids, which is applicable to very strong magnets and efficient conversion of spin information to an electric signal. Our main method is a field theory.

Main Research Field

Mathematical and physical sciences

Related Research Fields

Interdisciplinary science and engineering


  • Spintronics

Selected Publications

  1. Fumiya Nagasawa, Diego Frustaglia, Henri Saarikoski, Klaus Richter, and Junsaku Nitta:
    "Control of spin geometric phase in semiconductor quantum rings"
    Nature Communications 4, 2526 (2013).
  2. Hideo Kawaguchi,G. Tatara:
    Effective Hamiltonian theory for nonreciprocal light propagation in magnetic Rashba conductor Phys. Rev. B 94,235148 (1-8) (2016).
  3. Toru Kikuchi, Takashi Koretsune, Ryotaro Arita, G. Tatara:
    Dzyaloshinskii-Moriya interaction as a consequence of a Doppler shift due to
    spin-orbit-induced intrinsic spin current
    Phys. Rev. Lett. 116,247201 (1-6) (2016).(PRL Editors' Suggestion)
  4. Junya Shibata, Akihito Takeuchi, Hiroshi Kohno, and Gen Tatara:
    Theory of Anomalous Optical Properties of Bulk Rashba Conductor
    J.Phys. Soc. Japan 85,033701 (1-5) (2016).
  5. Gen Tatara:
    Thermal Vector Potential Theory of Transport Induced by a Temperature Gradient
    Phys. Rev. Lett.114, 196601 (1-5) (2015).
  6. Gen Tatara, Hiroshi Kohno and Junya Shibata:
    "Microscopic Approach to Current-driven Domain Wall Dynamics"
    Phys. Rep., 468 , 213-301 (2008).
  7. Gen Tatara and Hidetoshi Fukuyama:
    "Phasons and Excitations in Skyrmion Lattice"
    J. Phys. Soc. Jpn., 83 104711(1-15) (2014).
  8. Henri Saarikoski, Hiroshi Kohno, Christopher H. Marrows, and Gen Tatara:
    "Current-driven dynamics of coupled domain walls in a synthetic antiferromagnet"
    Phys. Rev. B, 90, 094411(1-8) (2014).
  9. Hideo Kawaguchi and Gen Tatara:
    "Coupling Theory of Emergent Spin Electromagnetic Field and Electromagnetic Field"
    J. Phys. Soc. Jpn., 83, 074710 (1-6) (2014).
  10. N. Nakabayashi and G. Tatara:
    "Rashba-induced spin electromagnetic _elds in a strong sd coupling region"
    New J. Phys., 16 015016 (1-18) (2014).

Lab Members

Principal Investigator

Gen Tatara
Team Leader

Core Members

Henri Mikael Saarikoski
Research Scientist
Collins Ashu Akosa
Postdoctoral Researcher
Atsuo Shitade
Special Postdoctoral Researcher
Yuta Yamane
Visiting Researcher
Hideo Kawaguchi
Junior Research Associate
Junji Fujimoto
Research Fellow

Contact information

2-1 Hirosawa, Wako, Saitama
351-0198 Japan

Email: gen.tatara [at]

Related links

Recent research results

August 19, 2016: RIKEN RESEARCH
A changed exchange for magnetic materials