Japanese/English

Koji Muraki, Dr.
- Group Leader, Senior Distinguished Scientist -
Quantum Solid State Physics Research Group
NTT Basic Research Laboratories
3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan
E-mail: koji.muraki.mnathco.ntt.co.jp
1994.4-Present NTT Basic Research Laboratories
2001.8-2002.3 Guest Scientist at Max-Planck-Insititut, Stuttgart
1994.3 Ph.D, University of Tokyo

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Selected Publications

Full List of Publications (Since 1992)

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. Phys. B 99, 121303(R) (2019). [abstract]
Landau-Zener-Stuckelberg interference in coherent charge oscillations of a one-electron double quantum dot
Takeshi Ota, Kenichi Hitachi, and Koji Muraki
Scientific Reports 8, 5491 (2018). [abstract]
Waveform measurement of charge- and spin-densitywavepackets in a chiral Tomonaga-Luttinger liquid
M. Hashisaka, N. Hiyama, T. Akiho, K. Muraki and T. Fujisawa
Nature Physics 13, 559 (2017). [abstract]
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). [abstract]
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). [abstract]
NMR probing of spin and charge order near odd-integer filling in the second Landau level
T. D. Rhone, L. Tiemann, and K. Muraki
Phys. Rev. B 92, 041301(R) (2015). [abstract]
Gate-controlled semimetal-topological insulator transition in an InAs/GaSb heterostructure
Kyoichi Suzuki, Yuichi Harada, Koji Onomitsu, and Koji Muraki
Phys. Rev. B 91, 245309 (2015). [abstract]
NMR profiling of quantum electron solids in high magnetic fields
L. Tiemann (*), T. D. Rhone (*), N. Shibata, and K. Muraki (* equal contribution)
Nature Physics 10, 648-652 (2014). [abstract] (published online, Jul. 20, 2014)
= 5/2 fractional quantum Hall state in low-mobility electron systems: Different roles of disorder
Gerardo Gamez and Koji Muraki
Phys. Rev. B 88, 075308 (2013). [abstract]
Edge channel transport in the InAs/GaSb topological insulating phase
Kyoichi Suzuki, Yuichi Harada, Koji Onomitsu, and Koji Muraki
Phys. Rev. B 87, 235311 (2013). [abstract]
Real-space imaging of fractional quantum Hall liquids
Junichiro Hayakawa, Koji Muraki, and Go Yusa
Nature Nanotechnology 8, 31 (2013). [abstract] (published online, Dec. 2, 2012)
Impact of graphene quantum capacitance on transport spectroscopy
K. Takase, S. Tanabe, S. Sasaki, H. Hibino, and K. Muraki
Phys. Rev. B 86, 165435 (2012). [abstract]
Unraveling the Spin Polarization of the = 5/2 Fractional Quantum Hall State
L. Tiemann, G. Gamez, N. Kumada, and K. Muraki
Science 335, 828 (2012). [abstract] (published online January 26 2012, Science Express)
Observation of hysteretic transport due to dynamic nuclear spin polarization in a GaAs lateral double quantum dot
T. Kobayashi, K. Hitachi, S. Sasaki, and K. Muraki
Phys. Rev. Lett. 107, 216802 (2011). [abstract]
Intrinsic Gap and Exciton Condensation in the T=1 Bilayer System
P. Giudici, K. Muraki, N. Kumada, and T. Fujisawa
Phys. Rev. Lett. 104, 056802 (2010). [abstract]
Spin-Dependent Phase Diagram of the nu_T=1 Bilayer Electron System
P. Giudici, K. Muraki, N. Kumada, Y. Hirayama, and T. Fujisawa
Phys. Rev. Lett. 100, 106803 (2008). [abstract]
NMR Evidence for Spin Canting in a Bilayer nu = 2 Quantum Hall System
N. Kumada, K. Muraki , and Y. Hirayama
Phys. Rev. Lett. 99, 076805 (2007). [abstract]
Low-Frequency Spin Dynamics in a Canted Antiferromagnet
N. Kumada, K. Muraki , and Y. Hirayama
Science 313, 329 (2006). [abstract]
Spin Degree of Freedom in the nu = 1 Bilayer Electron System Investigated by Nuclear Spin Relaxation
N. Kumada, K. Muraki, K. Hashimoto, and Y. Hirayama
Phys. Rev. Lett 94, 096802 (2005). [abstract]
Controlled Multiple Quantum Coherences of Nuclear Spins in a Nonometre-Scale Device
G. Yusa, K. Muraki, K. Takashina, K. Hashimoto, and Y. Hirayama
Nature 434, 1001 (2005). [abstract]
Effects of Inversion Asymmetry on Electron-Nuclear Spin Coupling in Semiconductor Heterostructures:
Possible role of spin-orbit interactions
K. Hashimoto, K. Muraki, N. Kumada, T. Saku, and Y. Hirayama
Phys. Rev. Lett 94, 146601 (2005). [abstract]
Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
K. Muraki, J. G. S. Lok, S. Kraus, W. Dietsche, K. von Klitzing, D. Schuh, M. Bichler, W. Wegscheider
Phys. Rev. Lett. 92, 246801 (2004). [abstract]
Electrically Controlled Nuclear Spin Polarization and Relaxation by Quantum Hall States
K. Hashimoto, K. Muraki, T. Saku, and Y. Hirayama
Phys. Rev. Lett. 88, 176601 (2002). [abstract]
Charge Excitations in Easy-Axis and Easy-Plane Quantum Hall Ferromagnets
K. Muraki, T. Saku, and Y. Hirayama
Phys. Rev. Lett. 87, 196801 (2001). [abstract]
Spin Transition of a Two-Dimensional Hole System in the Fractional Quantum Hall Effect
K. Muraki and Y. Hirayama
Phys. Rev. B 59, R2502 (1999). [abstract]
Effect of Valence Band Structure on the Fractional Quantum Hall Effect of Two-Dimensional Hole Systems
K. Muraki and Y. Hirayama
Physica B 249, 65 (1998). [abstract]
Fermi-Level Effect on Ga Self-Diffusion Studied Using (69)GaAs/(69)Ga(71)GaAs Isotope Superlattice
K. Muraki and Y. Horikoshi
Inst. Phys. Conf. 145, 547 (1996).
Evidence for Resonant Electron Capture and Charge Buildup in AlGaAs/GaAs Quantum Wells
K. Muraki, A. Fujiwara, S. Fukatsu, Y. Shiraki, and Y. Takahashi
Phys. Rev. B 53, 15 477 (1996). [abstract]
Surface Segregation of In Atoms and its Influence on the Energy Levels in InGaAs/GaAs Quantum Wells
K. Muraki, S. Fukatsu, Y. Shiraki, and R. Ito
Appl. Phys. Lett. 61, 557 (1992). [abstract]

Full List of Publications (Since 1992)

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