Nobuko Naka

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Name
Nobuko Naka
Affiliation
Kyoto University

Published Papers

 
Photoluminescence properties of the entire excitonic series in Cu2O
Mitsuyoshi Takahata and Nobuko Naka
Physical Review B   98 195205-1-195205-10   2018   [Refereed]
Superradiance-to-polariton crossover of Wannier excitons with multiple resonances
Mitsuyoshi Takahata, Koichiro Tanaka, and Nobuko Naka
Physical Review Letters   121 173604-1-173604-6   2018   [Refereed]
Quantitative relevance of substitutional impurities to carrier dynamics in diamond
Takaaki Shimomura, Yoshiki Kubo, Julien Barjon, Norio Tokuda, Ikuko Akimoto, and Nobuko Naka
Physical Review Materials   2 094601-1-094601-7   2018   [Refereed]
Nonlocal optical response of weakly confined excitons in Cu2O mesoscopic films
Mitsuyoshi Takahata, Koichiro Tanaka, and Nobuko Naka
Physical Review B   97 205305-1-205305-6   2018   [Refereed]
Tatsuya Kitamura, Mitsuyoshi Takahata, and Nobuko Naka
Journal of Luminescence   192 808-813   2017   [Refereed]
Florian Schoene, Heinrich Stolz, and Nobuko Naka
Physical Review B   96 115207-1-115207-10   2017   [Refereed]
Two optical routes of cold carrier injection in silicon revealed by time-resolved excitation spectroscopy
Ikuko Akimoto and Nobuko Naka
Applied Physics Express   10 061361-1-061361-4   2017   [Refereed]
Nobuko Naka, Hikaru Morimoto, and Ikuko Akimoto
Physica Status Solidi A   213 2551-2563   2016   [Refereed][Invited]
Hikaru Morimoto, Yuji Hazama, Koichiro Tanaka, and Nobuko Naka
Diamond Relat. Mater.   63 47   2016   [Refereed]
I. Akimoto, N. Naka, and N. Tokuda
Diamond Relat. Mater.   63 38   2016   [Refereed]
Hikaru Morimoto, Yuji Hazama, Koichiro Tanaka, and Nobuko Naka
Phys. Rev. B   92 201202R   2015   [Refereed]
2.Ikuko Akimoto, Katsuyuki Fukai, Yushi Handa, and Nobuko Naka
App. Phys. Lett.   105 032102-1-0321-2-4   2014   [Refereed]
Yuji Hazama, Nobuko Naka, and Heinrich Stolz
Phys. Rev. B   90 045209-1-045209-7   2014   [Refereed]
Sandhaya Koirala, Mitsuyoshi Takahata, Yuji Hazama, Nobuko Naka, and Koichiro Tanaka
J. Lumin.   155 65-69   2014   [Refereed]
Temporal shift from magnetoplasma resonance to cyclotron resonance of photo-carriers generated from 1s-exciton in cuprous oxide crystal
I. Akimoto, S. Torai, N. Naka, and M. Shirai
Eur. Phys. J. B   85 374-1-374-5   2012   [Refereed]
C. Sandfort; J. Brandt; C. Finke; D. Fröhlich; M. Bayer; H. Stolz; N. Naka
Physical Review B - Condensed Matter and Materials Physics   84(16) 165215-1-165215-7   2011   [Refereed]
J. Omachi; T. Suzuki; K. Kato; N. Naka; K. Yoshioka; M. Kuwata-Gonokami
Physical Review Letters   111(2) 026402-1-026402-5   2013   [Refereed]
N. Naka; K. Fukai; Y. Handa; I. Akimoto
Physical Review B - Condensed Matter and Materials Physics   88(3) 035205-1-035205-5   2013   [Refereed]
Y. Hazama; N. Naka; M. Kuwata-Gonokami; K. Tanaka
EPL   104(4) 47012-1-47012-6   2013   [Refereed]
N. Naka; K. Fukai; Y. Handa; I. Akimoto
Journal of Luminescence   152 93-97   2014   [Refereed]
Formation control of electron-hole droplets in diamond by a weak pulse injection
19.J. Omachi, N. Naka, K. Yoshioka, M. Kuwata-Gonokami
Journal of Physics C: Conference Series   148 012051-1-012051-3   2009   [Refereed]
N. Naka; S. Kono; M. Hasuo; N. Nagasawa
Progress in Crystal Growth and Characterization of Materials   33(1-3) 89-92   1996   [Refereed]
S. Kono; N. Naka; M. Hasuo; S. Saito; T. Suemoto; N. Nagasawa
Solid State Communications   97(6) 455-458   Feb 1996   [Refereed]
N. Naka; M. Hasuo; N. Nagasawa
Physics of the Solid State   40(5) 847-849   May 1998   [Refereed]
N. Naka; N. Nagasawa
Solid State Communications   110(3) 153-157   1999   [Refereed]
N. Naka; N. Nagasawa
Solid State Communications   116(8) 417-419   2000   [Refereed]
N. Naka; N. Nagasawa
Journal of Luminescence   87-9 201-203   May 2000   [Refereed]
Effects of Rayleigh scattering on photovoltaic spectra associated with 1s orthoexcitons in Cu2O
A. Mori; N. Naka; N. Nagasawa
Physical Review B - Condensed Matter and Materials Physics   63(3) 332021-332024   2001   [Refereed]
Effects of wandering photons on the excitonic optical signals in Cu2O crystals
Y. Nakamura; N. Naka; N. Nagasawa
Physical Review B - Condensed Matter and Materials Physics   64(7) 752031-752036   2001   [Refereed]
N. Naka; N. Nagasawa
Journal of Luminescence   94 413-416   Dec 2001   [Refereed]
Y. Kamada; N. Naka; S. Saito; N. Nagasawa; Z.M. Li; Z.K. Tang
Solid State Communications   123(9) 375-378   2002   [Refereed]
Two-photon diagnostics of stress-induced exciton traps and loading of 1s-yellow excitons in Cu2O
N. Naka; N. Nagasawa
Physical Review B - Condensed Matter and Materials Physics   65(7) 0752091-0752095   2002   [Refereed]
Nonlinear paraexciton kinetics in a potential trap in Cu2O under two-photon resonance excitation
N. Naka; N. Nagasawa
Physical Review B - Condensed Matter and Materials Physics   65(24) 2452031-2452035   2002   [Refereed]
N. Nagasawa; H. Sugiyama; N. Naka; I. Kudryashov; M. Watanabe; T. Hayashi; I. Božović; N. Božović; G. Li; Z. Li; Z.K. Tang
Journal of Luminescence   97(3-4) 161-167   Jun 2002   [Refereed]
Y. Kamada; N. Naka; N. Nagasawa; Z.M. Li; Z.K. Tang
Physica B: Condensed Matter   323(1-4) 239-241   Oct 2002   [Refereed]
N. Naka; N. Nagasawa
Solid State Communications   126(9) 523-525   May 2003   [Refereed]
N. Naka; N. Nagasawa
Physica Status Solidi (B) Basic Research   238(3) 397-403   Aug 2003   [Refereed]
N. Naka; N. Nagasawa
Physical Review B - Condensed Matter and Materials Physics   70(15) 155205-1-155205-10   2004   [Refereed]
N. Nagasawa; H. Sugiyama; N. Naka; I. Kudryashov; Z.-M. Li; Z.-K. Tang
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   43(2) 868-871   Feb 2004   [Refereed]
J.-T. Ye; N. Naka; Y. Morihira; Z.-K. Tang; W.-K. Ge; P. Sheng; I. Kudryashov; N. Nagasawa
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   43(10) 7354-7355   Oct 2004   [Refereed]
N. Tajima; J.-I. Fujisawa; N. Nakay; T. Ishihara; R. Kato; Y. Nishio; K. Kajita
Journal of the Physical Society of Japan   74(2) 511-514   Feb 2005   [Refereed]
N. Naka; N. Nagasawa
Journal of Luminescence   112(1-4) 11-16   Apr 2005   [Refereed]
N. Naka; S. Hashimoto; T. Ishihara
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   44(7A) 5096-5101   Jul 2005   [Refereed]
J. Brandt; D. Fröhlich; C. Sandfort; M. Bayer; H. Stolz; N. Naka
Physical Review Letters   99(21)    2007   [Refereed]
N. Naka; J. Omachi; M. Kuwata-Gonokami
Physical Review B - Condensed Matter and Materials Physics   76(19)    2007   [Refereed]
N. Naka; T. Kitamura; J. Omachi; M. Kuwata-Gonokami
Physica Status Solidi (B) Basic Research   245(12) 2676-2679   2008   [Refereed]
N. Naka; J. Omachi; H. Sumiya; K. Tamasaku; T. Ishikawa; M. Kuwata-Gonokami
Physical Review B - Condensed Matter and Materials Physics   80(3)    Jul 2009   [Refereed]
R. Schwartz; N. Naka; F. Kieseling; H. Stolz
New Journal of Physics   14    2012   [Refereed]
H. Stolz; R. Schwartz; F. Kieseling; S. Som; M. Kaupsch; S. Sobkowiak; D. Semkat; N. Naka; T. Koch; H. Fehske
New Journal of Physics   14    2012   [Refereed]
N. Naka; I. Akimoto; M. Shirai; K.-I. Kan'No
Physical Review B - Condensed Matter and Materials Physics   85(3)    Jan 2012   [Refereed]

Conference Activities & Talks

 
Optical injection of valley-polarized electrons in group IV semiconductors [Invited]
Nobuko Naka and Ikuko Akimoto
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   13 Jul 2018   
Two routes of optical carrier injection in high-purity diamond
S. Hamabata, I. Akimoto, and N. Naka
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   10 Jul 2018   
Evaluation of the exciton effective mass in intrinsic diamond
K. Konishi, I. Akimoto, H. Matsuoka, Ian Friel, J. Isberg, and N. Naka
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   10 Jul 2018   
Photo-excited carrier dynamics in intrinsic diamond studied by terahertz spectroscopy
T. Ichii, N. Naka, and K. Tanaka
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   10 Jul 2018   
Ultraviolet absorption by boron-bound excitons in diamond
Yoshiki Kubo, Solange Temgoua, Julien Barjon, and Nobuko Naka
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   10 Jul 2018   
Excitonic response beyond the long-wavelength approximation in Cu2O mesoscopic films
M. Takahata, K. Tanaka, and N. Naka
The 12th International Conference on Excitonic and Photonic Processes in Condensed Matter and Nano Materials   10 Jul 2018   
Photo-excited carrier dynamics in intrinsic diamond studied by terahertz spectroscopy
T. Ichii, N. Naka, and K. Tanaka
International school and symposium on ultrafast control of materials   13 Jun 2018   
Enhanced mobility of excitons under inelastic phonon scattering in intrinsic diamond
K. Konishi, I. Akimoto, H. Matsuoka, I. Friel, J. Isberg, N. Naka
7 Mar 2018   
Time-resolved spectroscopy on intrinsic diamond for reassessment of the exciton binding energy
N. Naka, S. Hamabata, K. Konishi, J. H. Kaneko, I. Akimoto
Hasselt Diamond Workshop SBDD XIII   7 Mar 2018   
Enhanced electron mobility in intrinsic diamond at cryogenic temperatures
N. Naka, I. Akimoto, T. Shimomura, Ian Friel, and J. Isberg
Hasselt Diamond Workshop SBDD-XXII   10 Mar 2017   
Exciton interband relaxation observed by time-resolved cyclotron resonance in diamond
Ikuko Akimoto and Nobuko Naka
19th International Conference on Dynamical Processes in Excited States of Solids   2 Jul 2016   
Excitons and fundamental properties of diamond [Invited]
N. Naka, H. Morimoto, and I. Akimoto
Hasselt Diamond Workshop   9 Mar 2016   
Mid-infrared response of Fermi-degenerate electron-hole droplets
Junko Omachi, Nobuko Naka, Kosuke Yoshioka, Makoto Kuwata-Gonokami
Fundamental optical processes in semiconductors   Aug 2015   
Exciton diffusion coefficient measured by photoluminescence imaging in ultrapure diamond
H. Morimoto, Y. Hazama, K. Tanaka, and N. Naka
9th international conference on new diamond and nano carbons   27 May 2015   
Time-resolved cyclotron resonance on dislocation-free HPHT diamond
I. Akimoto, N. Naka, and N. Tokuda
9th international conference on new diamond and nano carbons   26 May 2015   
Diamond-an extreme material for semiconductor optics [Invited]
Nobuko Naka
9th Japanese-French Frontiers of Science Symposium   Jan 2015   
Excitons and carrier effective masses in intrinsic diamond [Invited]
Nobuko Naka, Yuji Hazama, and Ikuko Akimoto
International Conference on Diamond and Carbon Materials   10 Sep 2014   
Momentum and spin relaxation times for optically excited delocalized
N. Naka and I. Akimoto
12th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors   Sep 2014   
Observation of nonequilibrium gas-liquid phase transition of the electron-hole system in diamond
Y. Hazama, N. Naka, M. Kuwata-Gonokami, and K. Tanaka
12th International Conference on Nonlinear Optics and Excitation Kinetics in Semiconductors   Sep 2014   
High-efficiency detection of free carriers via Auger ionization in wide-gap semiconductors
Nobuko Naka and Ikuko Akimoto
32nd international conference on the physics of semiconductors   14 Aug 2014   
Momentum relaxation times for optically excited [Invited]
I. Akimoto and N. Naka
Awaji International Workshop on “Electron Spin Science & Technology: Biological and Materials Science Oriented Applications”   17 Jun 2014   
Free-carrier generation by excitonic two-body collisions in semiconductors
I. Akimoto and N. Naka
The 7th international conference on spontaneous coherence in excitonic systems   22 Apr 2014   
Polyexcitons and electron-hole droplet condensation in diamond [Invited]
Nobuko Naka
The 7th international conference on spontaneous coherence in excitonic systems   22 Apr 2014   
Polyexcitons in the Phase Diagram of the Electron-Hole System in Diamond
Yuji Hazama, Nobuko Naka, Makoto Kuwata-Gonokami, and Koichiro Tanaka
The 7th international conference on spontaneous coherence in excitonic systems   22 Apr 2014   
Trapping Mechanism and Energy Relaxation of Paraexcitons
Sandhaya Koirala1, Mitsuyoshi Takahata1, Yuji Hazama, Nobuko Naka, and Koichiro Tanaka
The 7th international conference on spontaneous coherence in excitonic systems   22 Apr 2014   
Magneto-optics on the indirect excitons in diamond
Yuji Hazama, Stephen A. McGill, Judy G. Cherian, James S. Brooks, and Nobuko Naka
International School and Symposium on Molecular Materials (ISSMM2013)   Nov 2013   
Phase diagram of exciton complexes in diamond
Yuji Hazama, Nobuko Naka, Makoto Kuwata-Gonokami, and Koichiro Tanaka
International Conference on Optics of Excitons in Confined Systems - OECS 13   Sep 2013   
Measurement of photo-carrier effective masses in diamond and estimation of mobilities
Nobuko Naka
International Conference on Diamond and Carbon Materials   Sep 2013   
Auger scattering of excitons in the excited Rydberg states in cuprous oxide
Tatsuya Kitamura and Nobuko Naka
18th International Conference on Dynamical Processes in Excited States of Solids   Aug 2013   
Nanosecond cyclotron resonance in ultrapure diamond
Nobuko Naka1,*, Katsuyuki Fukai, Yushi Handa, and Ikuko Akimoto
18th International Conference on Dynamical Processes in Excited States of Solids   Aug 2013   
Influence of the carrier lifetime on the phase diagram of electron-hole systems in diamond
Nobuko Naka
The 18th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures   Jul 2013   
Measurement of the momentum relaxation times for delocalized electrons in pristine diamond
Ikuko Akimoto, Katsuyuki Fukai, Yushi Handa, and Nobuko Naka
1st Awaji International Workshop on “Electron Spin Science & Technology: Biological and Materials Science Oriented Applications”   Jun 2013   
The electron-hole liquid in diamond and cyclotron resonance in cuprous oxide
Vortrag in Rahmen des Optikseminars   2 Oct 2012   Rostock, Germany
Bose-Einstein condensation of excitons in Cu2O
11th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors   26 Sep 2012   Stuttgart, Germany
Free-carrier generation by two-photon resonant excitation to the excitonic states in cuprous oxide
11th International Workshop on Nonlinear Optics and Excitation Kinetics in Semiconductors   24 Sep 2012   Stuttgart, Germany
Free-carrier generation by excitonic collisions studied by a time-resolved cyclotron resonance in cuprous oxide
31st International conference on the physics of semiconductors   30 Jul 2012   Zurich, Switzerlan
Temporal shift from magnetoplasma resonance to cyclotron resonance of photo carriers generated from 1s-exciton on cuprous oxide crystal
10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials   3 Jul 2012   Groningen, Netherlands
Lifetime effect on the electron-hole-droplet formation in diamond
10th International Conference on Excitonic Processes in Condensed Matter, Nanostructured and Molecular Materials   2 Jul 2012   Groningen, Netherlands
Correlation between free-exciton life time and oxygen vacancy concentration in cuprous oxide natural crystals
GCOE symposium "Links among hierarchies"   13 Feb 2012   Kyoto University, Japan
Comparative study on temperature-dependent lifetimes of free and trapped excitons in cuprous oxide
第22回光物性研究会   10 Dec 2011   熊本大学
Temperature-dependent transients of free and trapped paraexcitons in cuprous oxide
日本物理学会2011年秋季大会   23 Sep 2011   富山大学五福キャンパス
Wave-vector-dependent intra-excitonic transition rate in diamond
International Conference on Correlation Effects in Radiation Fields   13 Sep 2011   Rostock, Germany
Exciton-exciton scattering studied by time-resolved cyclotron resonance
International Conference on Correlation Effects in Radiation Fields   12 Sep 2011   Rostock, Germany
Temperature dependent lifetimes of paraexcitons and excitons trapped at oxygen vacancies in cuprous oxide
International Conference on Luminescence   28 Jun 2011   Ann Arbor, Michigan, US
Exciton dynamics in potential traps and the possibility of Bose-Einstein condensation
75 Annual Meeting of the Deutsche Physikalische Gesellschaft   18 Mar 2011   (Dresden, Germany
Temperature dependence of decay time due to excitons bound by oxygen vacancy in Cu2O
GCOEシンポジウム「フロンティア開拓」   23 Feb 2011   京都大学
High resolution spectroscopy of trapped 1S excitons in Cu2O at high magnetic fields
NOEKS10   17 Aug 2010   Paderborn, Germany
Observation of polyexcitons in diamond
NOEKS10   17 Aug 2010   Paderborn, Germany
Photoluminescence study on excitonic fine structure in diamond
NOEKS10   17 Aug 2010   Paderborn, Germany
Ultra-low temperature thermodynamics and spectroscopy of excitons in cuprous oxide confined in potential traps
NOEKS10   16 Aug 2010   Paderborn, Germany