Laboratories
Functional Nano-spin Research Team
Koji ISHIBASHi
Team Leader
Koji ISHIBASHI (D.Eng.)
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Research Areas

The aim of this team is to control electrons, spins and nuclear spins on the single electron level in designed nanoscale devices, for the realization of nanoelectronics, such as single-electronics and quantum computing. To do this, we fabricate the nanodevices in a contolled manner in combination with top-down and bottom-up nanotechnologies, and study basic physics in the nanostructures and explore new functionalities for nanodevices.

Research Subject

  1. Fabrication of nanostructures with a sub-10nm scale by using carbon nanotubes and semiconductor nanowires, and their integration
  2. Control of single electron, single spin and nuclear spins in quantum dots
  3. Control of single electron on liquid He surface

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window
  2. Advanced Device Laboratory PageNew Window

List of Selected Publications

  1. Shaoyun Huang, Naoki Fukata, Maki Shimizu, Tomohiro Yamaguchi, Takashi Sekiguchi, and Koji Ishibashi,:
    "Classical Coulomb blockade of a silicon nanowire dot"
    Appl. Phys. Lett., 92, 213110 (2008)
  2. H.Ikegami, H.Akimoto, K.Kono,:
    "Wigner Solid Transition of Electrons Confined in Microchannel"
    Journal of Low Temperature Physics 150, 224(2008)
  3. S. M. Huang, H. Akimoto, K. Kono, J. J. Lin, S. Tarucha, and K. Ono,:
    "The study of spin transport from doublet to triplet states in Quantum Dots"
    Jpn. J. Appl. Phys. 47, 3257 (2008)
  4. D. G. Rees, I. Kuroda, C. A. Marrache-Kikuchi, M. Höfer, P. Leiderer, and K. Kono,:
    "Point-Contact Transport Properties of Strongly Correlated Electrons on Liquid Helium"
    Phys. Rev. Lett. 106, 026803 (2011)
  5. S. Moriyama, T. Fuse, T. Yamaguchi, and K. Ishibashi,:
    "Spin effects in single-electron transport through carbon nanotube quantum dots"
    Phys. Rev. B76, 045102 (2007)
  6. Hideyuki Maki, Testuya Sato and Koji Ishibashi,:
    "Direct observation of the deformation and the band gap change from an individual single-walled carbon nanotube under uniaxial strain"
    Nano Letters Vol.7 No.4, 890-895 (2007)
  7. S. M. Huang, Y. Tokura, H. Akimoto, K. Kono, J. J. Lin, S. Tarucha, and K. Ono,:
    "Spin Bottleneck in Resonant Tunneling through Double Quantum Dots with Different Zeeman Splittings"
    Phys. Rev. Lett. 104, 136801 (2010)
  8. H. Ikegami, H. Akimoto, and K. Kono,:
    "Nonlinear Transport of the Wigner Solid on Superfluid 4He in a Channel Geometry"
    Phys. Rev. Lett. 102, 046807 (2009)
  9. S. Moriyama, D. Tsuya, E. Watanabe, S. Uji, M. Shimizu, T. Mori, T. Yamaguchi, and K. Ishibashi,:
    "Coupled quantum dots in a graphene-based two-dimensional semimetal"
    Nano Lett. 9, 2891-2896 (2009)
  10. H. Tabata, M. Shimizu, and K. Ishibashi,:
    "Fabrication of single electron transistors using transfer-printed aligned single walled carbon nanotubes arrays"
    Appl. Phys. Lett. 95, 113107 (2009)