Last update:8/11/2019
Research topics
Publication list
Group members


Since 7/6/2007

Quantum Solid State Physics Research Group studies quantum correlated phenomena in semiconductor nanostructures. Our topics include spin and charge dynamics in quantum dots formed in GaAs, Si or carbon based materials, electric properties of two-dimensional systems in GaAs/AlGaAs or Si/SiO2 heterostructures and the characterization of semiconductor surfaces using low-temperature scanning probe microscopies. Facilities we use include molecular beam epitaxy, electron beam lithography, low-temperature scanning tunnel microscopy with MBE chamber systems and several cryostats.
News and recent selected publications
  • 8/11/2019, "Quantum Rings Engineered by Atom Manipulation",
    Van Dong Pham, Kiyoshi Kanisawa, and Stefan Folsch
    Phys. Rev. Lett. 123, 066801 (2019).

  • 1/10/2019, New internship student: Colin Piquard

  • 1/10/2019, New internship student: Takase Shimizu

  • 2/9/2019, New research specialist: Taro Wakamura

  • 30/8/2019, Lee Sanghyun finished his internship at NTT.

  • 13/7/2019, Thibaut Jonckheere finished at NTT.

  • 28/6/2019, Moved to RIKEN: Ngoc Han Tu

  • 31/5/2019, ""Charge equilibration in integer and fractional quantum Hall edge channels in a generalized Hall-bar device",
    C. Lin,R. Rguchi, M. Hashisaka, T. Akiho, K. Muraki and T. Fujisawa,
    Phys. Rev. B 99, 195304 (2019)

  • 21/5/2019, "Determination of g-factor in InAs two-dimensional electron system by capacitance spectroscopy",
    H. Irie, T. Akiho and K. Muraki
    Appl. Phys. Express 12, 063004 (2019).

  • 21/5/2019, Invited professor: Thibaut Jonckheere

  • 13/5/2019, New internship student: Lee Sanghyun

  • 22/4/2019, "Surface-acoustic-wave resonators with Ti, Cr, and Au metallization on GaAs",
    R. Takasu, Y. Sato, T. Hata, T. Akiho, K. Muraki and T. Fujisawa,
    Appl. Phys. Express 12, 055001 (2019).

  • 1/4/2019, New Staff: Katsumasa Yoshioka

  • 29/3/2019, Dyon van Dinter finished his internship at NTT.

  • 28/3/2019, "Counterflowing edge current and its equilibration in quantum Hall devices with sharp edge potential: Roles of incompressible strips and contact configuration",
    T. Akiho, H. Irie, K. Onomitsu and K. Muraki,
    Phys. Rev. B 99, 121303(R) (2019).

  • 28/3/2019, "Spectroscopic study on hot-electron transport in a quantum Hall edge channel",
    T. Ota, S. Akiyama, M. Hashisaka, K. Muraki and T. Fujisawa,
    Phys. Rev. B 99, 085310 (2019).

  • 10/8/2018, gTomonaga-Luttinger-Liquid Nature of Edge Excitations in Integer Quantum Hall Edge Channelsh
    M. Hashisaka, T. Fujisawa,
    Reviews in Physics, 3, 32-43 (2018).

  • 5/4/2018, gLandau-Zener-Stuckelberg interference in coherent charge oscillations of a one-electron double quantum doth
    T. Ota, K. Hitachi & K. Muraki,
    Scientific Reports 8, 5491 (2018).

  • 31/3/2018, Moved out: Yukio Takahashi

  • 23/8/2017, Dino Ibrahimagic finished his internship at NTT.

  • 1/7/2017, New Research Specialist: Masayuki Hashisaka

  • 19/4/2017, "Highly gate-tuneable Rashba spin-orbit interaction in a gate-all-around InAs nanowire metal-oxide-semiconductor field-effect transistor"
    K. Takase, Y. Ashikawa, G. Zhang, K. Tateno, and S. Sasaki,
    Scientific Reports 7, 930 (2017).

  • 1/4/2017, New Post-doctal: Yukio Takahashi

  • 31/3/2017, Moved to Fukuoka Institute of Technology: Kyoichi Suzuki

  • 9/1/2017, New internship student: Dino Ibrahimagic

  • 21/12/2016, Moved to ESPCI: Francois Couedo

  • 12/2016, Harry Parke finished his internship at NTT.

  • 12/2016, Ruben Ohana finished his internship at NTT.

  • 9/12/2016, "Quantum Hall effect in epitaxial graphene with permanent magnets"
    F. D. Parmentier, T. Cazimajou, Y. Sekine, H. Hibino, H. Irie, D. C. Glattli, N. Kumada, and P. Roulleau,
    Scientific Reports 7, 38393 (2016).

  • 30/11/2016, Paul Brasseur finished his internship at NTT.

  • 10/11/2016, "Engineering quantum spin Hall insulators by strained-layer heterostructures"
    T. Akiho, F. Couedo, H. Irie, K. Suzuki, K. Onomitsu, and K. Muraki,
    Appl. Phys. Lett. 109, 192105 (2016).

  • 13/10/2016, "Andreev reflection and bound state formation in a ballistic two-dimensional electron
    gas probed by a quantum point contact"
    Hiroshi Irie, Clemens Todt, Norio Kumada, Yuichi Harada, Hiroki Sugiyama, Tatsushi Akazaki, and Koji Muraki,
    Phys. Rev. B 94, 155305 (2016).

  • 3/10/2016, New Post-doctal: Ngoc Han Tu

  • 11/7/2016, New internship student: Ohana Ruben

  • 8/7/2016, "Single-edge transport in an InAs/GaSb quantum spin Hall insulator"
    Francois Couedo, Hiroshi Irie, Kyoichi Suzuki, Koji Onomitsu, and Koji Muraki,
    Phys. Rev. B 94, 035301 (2016).

  • 7/7/2016, New internship student: Parke Harry

3-1 Morinosato-Wakamiya, Atugi, Kanagawa 243-0198, Japan
Qauntum Solid State Physics Research Group
NTT Basic Research Laboratories