筑波大学バナー

研究業績

最近の主要な論文

最近の国際会議


最近の主要な論文

2006年
N.Ozaki, N.Nishizawa, S.Marcet,S.Kuroda, O.Eryu and K.Takita
“Significant Enhancement of Ferromagnetism in Zn1-xCrxTe Doped with Iodine as an n-Type Dopant”
Physcal Review Letters 97, 037201 (2006)
2005年
S.Kuroda, N.Ozaki, N.Nishizawa, T.Kumekawa, S.Marcet and K.Takita
“Growth and magnetic properties of novel ferromagneticsemiconductor (Zn, Cr)Te”
Science and Technology of Advanced Materials 6 (2005) 558-594
21st Century COE Program, University of Tsukuba - Promotion of Interdisciplinary Materials Science for Novel Functions

N. Ozaki, I.Okabayashi, T.Kumekawa, N. Nishizawa, S.Marcet, S. Kuroda, and K. Takita
“Suppression of ferromagnetism due to hole doping in Zn1-xCrxTe grown by molecular-beam epitaxy”
Applied Physics Letters 87 (2005) 192116.

N. Ozaki, I.Okabayashi, T.Kumekawa, N. Nishizawa, S.Marcet, S. Kuroda, and K. Takita
“Suppression of ferromagnetism due to hole doping in Zn1-xCrxTe grown by molecular-beam epitaxy”
Applied Physics Letters 87 (2005) 192116.

N. Ozaki, N. Nishizawa, S. Kuroda, and K. Takita
“Magnetic properties of undoped and N-doped Zn1-xCrxTe Grown by MBE”
AIP conf. proc. 772, 345-346 (2005).

N. Ozaki, N. Nishizawa, S. Marcet, S. Kuroda, and K. Takita
“Magnetic behaviors of ferromagnetic semiconductor Zn1-xCrxTe grown byMBE”
J. Supercond. 18 (1), 29-32 (2005).
2004年
N.Ozaki, N.Nishizawa, S. Kuroda, and K. Takita;
"Magnetic and structural properties of MBE-grown Zn1-xCrxTe"
J. Phys.: Condens. Matter 16 S5773-S5776 (2004)

N.Ozaki, N.Nishizawa, K.-T. Nam, S. Kuroda, and K. Takita;
"Magnetic properties of MBE-grown Zn1-xCrxTe"
phys. stat. sol. (c) 1(4), 957-960 (2004).

K.-T. Nam, S. Kuroda, T.Kumekawa, N.Ozaki and K. Takita;
"Magnetotransport and magnetic properties of p-Zn1-xMnxTe:N -Carrier -induced ferromagnetism-"
phys. stat. sol. (b) 241(3), 668-671 (2004).
2003年
A.Yazawa, T.Iwazaki, N.Ozaki, S.Kuroda, K.Takita, K,Sato, Y.Imanaka, T.Takamasu, and G.Kido
"The carrier concentration dependence of magneto-photoluminescence in n-type modulationdoped Cd1-xMnxTe/ Cd1-xMgxTe single quantum wells"
Proc. of the 15th Int. Conf. on Electronic Properties of Two-Dimensional Systems (EP2DS-15), pp.540-543 (2003)

Y.Masumoto, M.Nomura, T.Okuno, Y.Terai, S.Kuroda and K.Takita;
"Highest-order optical phonon-mediated relaxation in CdTe/ZnTe quantum dots"
Journal of Luminescence 102-103 (2003) 623-628

K.-T.Nam, N.Watanabe, S,Kuroda, and K. Takita;
"Magneto-transport properties of p-Zn1-xMnxTe by nitrogen doping"
Journal of Superconductivity 16-2 (2003) 335

N.Ozaki, I.Okabayashi, K.-T. Nam, S. Kuroda, and K. Takita;
"Magnetic and transport properties of Zn1-xCrxTe"
Proc. of the 9th Symp. on phys. and Appl. Spin-Related Phenomena in Semiconductors (PASPS-9), pp.143-145 (2003)

K.-T. Nam, S. Kuroda, T.Kumekawa, N.Ozaki and K. Takita;
"Magnetic properties of p-Zn1-xMnxTe:N as investigated through the magnetotransport measurement"
Proc. of the 9th Symp. on phys. and Appl. Spin-Related Phenomena in Semiconductors (PASPS-9), pp.146-148 (2003)
2002年
T.Okuno,M..Nomura,Y,Masumoto,Y.Terai,S.Kuroda,K.Takita;
"Optical Study of Phonon-mediated Carrier Relaxation in CdTe/ZnTe Self-Assembled Quantum Dots"
Journal of the Physical Society of Japan 71-12 (2002) 3052

Y. H. Matsuda, T. Ikaida, N. Miura, S. Kuroda, F. Takano, and K. Takita;
"Effective mass of conduction electrons in Cd1-xMnxTe"
Physical Review B 65 (2002) 115202.

F. Takano, S. Kuroda, K. Takita, Y. Imanaka, T. Takamasu and G. Kido;
"Magneto-photoluminescence and transport measurements on modulation-doped Cd1-xMnxTe/Cd1-yMgyTe single quantum wells"
Physica Status Solidi 229 (2002) 751--755.

K.-T. Nam, N. Watanabe, S. Kuroda and K. Takita;
"Conductivity control in nitrogen-doped p-Zn1-xMnxTe and magneto-transport properties"
Physica Status Solidi 229 (2002) 261--264.

T. Yasuhira, K. Uchida, Y. H. Matsuda, N.Miura, S. Kuroda, K. Takita;
"Exchange interactions in CdMnTe/CdMgTe quantum wells under high magnetic fields"
Physica E 13 (2002) 568--571.

K.-T. Nam, S. Kuroda, N.Ozaki and K. Takita;
"Magneto-transport and magnetic properties of nitrogen doped p-Zn1-xMnxTe"
Proc. of the 8th Symp. on phys. and Appl. Spin-Related Phenomena in Semiconductors (PASPS-8), pp.73-76 (2002)
2001年
F. Takano, S. Kuroda, K. Takita, T. Takamasu, Y. Imanaka and G. Kido;
"Magnetoresistance of two-dimensional electrons in modulation-doped Cd1-xMnxTe/Cd1-yMgyTe SQWs : the variation with carrier concentration"
Physica E 12 (2001) 370--373.

Y. H. Matsuda, T. Yasuhira, K. Uchida, N. Miura, S. Kuroda and K. Takita;
"Excitons and magneto-absorption in Cd1-xMnxTe at 500T-fields"
Physica B 298 (2001) 416--420.

T. Yasuhira, Y. H. Matsuda, K. Uchida, N. Miura, S. Kuroda, I. Hara and K. Takita;
"High field magneto-optical study of magnetic interactions in CdMnTe quantum well"
Physica B 298 (2001) 411--415.

F. Takano, S. Kuroda, K. Takita, T. Takamasu, Y. Imanaka and G. Kido;
"Mangneto-transport of two-dimensional electron system in magnetic semiconductors heterostructure Cd(Mn)Te/(Cd,Mg)Te"
Physica B 298 (2001) 407--410.

S. Kuroda, Y. Terai, N. Umakoshi and K. Takita;
"Self-organized quantum dots of Cd1-xMnxTe : MBE growth on Zn(Cd)Te surface and magneto-photoluminescence"
Physica E 10 (2001) 353--357.

Y. H. Matsuda, N. Miura, S. Kuroda, M. Shibuya, K. Takita and A. Twardowski;
"Possible s-d hybridization effect on the cyclotron mass in II-VI diluted magnetic semiconductors at megagauss fields"
Physica B 294-295 (2001) 467--470.
2000年
Y. H. Matsuda, N. Miura, S. Kuroda, M. Shibuya and K. Takita;
"Cyclotron resonance in Cd1-xMnxTe:I at very high magnetic fields"
Journal of Crystal Growth 214/215 (2000) 400--404.

Y. Terai, S. Kuroda and K. Takita;
"Growth of self-organized quantum dots of Cd1-xMnxTe on ZnTe grown by atomic layer epitaxy"
Journal of Crystal Growth 214/215 (2000) 178--182.

S. Kuroda, Y. Terai, K. Takita, T. Takamasu, G. Kido, N. Hasegawa, T. Kuroda and F. Minami;
"Self-organized quantum dots of diluted magnetic semiconductors Cd1-xMnxTe",
Journal of Crystal Growth 214/215 (2000) 140--149.

Y. Terai, S. Kuroda, K. Takita;
"Self-organized formation and photoluminescence of Cd1-xMnxTe quantum dots grown on ZnTe by atomic layer epitaxy"
Applied Physics Letters 76 (2000) 2400--2403.

Y. Terai, S. Kuroda, K. Takita, T. Takamasu and G. Kido;
"Magneto-photoluminescence from self-organized quantum dots of Cd1-xMnxTe grown by molecular beam epitaxy"
Journal of Luminescence 87-89 (2000) 396--398.

W. Higemoto, I. Watanabe, K. Nagamine, S. Kuroda and K. Takita;
"Investigation of the effect of electric current on the dynamics of flux-line lattice"
Physica B 289-290 (2000) 400--403.

W. Higemoto, K. Nagamine, S. Kuroda and K. Takita;
"Microscopic studies of 2H-NbSe2 probed by positive muon",
Mol. Cryst. and Liq. Cryst. 341 (2000) 51--56.
1999年
W. Higemoto, K. Nagamine, S. Kuroda and K. Takita;
"Microscopic state of the positive muon in 2H-NbSe2",
Hyperfine Interactions 120/121 (1999) 591--594.

T. Kuroda, N. Hasegawa, F. Minami, Y. Terai, S. Kuroda and K. Takita;
"Micro photoluminescence spectra of CdTe and CdMnTe self-organized quantum dots",
Journal of Luminescence 83-84 (1999) 321--324.

S. Kuroda, Y. Terai, K. Takita, T. Okuno, Y. Masumoto;
"Excitonic luminescence from self-organized quantum dots of CdTe grown by molecular beam epitaxy",
Japanese Journal of Applied Physics 38 (1999) 2524--2528.
1998年
Y. Terai, S. Kuroda, K. Takita, T. Okuno, Y. Masumoto;
"Zero-dimensional excitonic properties of self-organized quantum dots of CdTe grown by molecular beam epitaxy",
Applied Physics Letters 73 (1998) 3757--3759.

S. Kuroda, K. Kojima, K. Takita, K. Uchida and N. Miura;
"Magneto-optical study of interface broadening of CdTe/Cd1-xMnxTe quantum wells",
Journal of Crystal Growth 184/185 (1998) 971--975.

S. Kuroda, Y. Terai, K. Takita, T. Okuno and Y. Masumoto;
"Self-organized quantum dots of zinc-blende MnTe grown by molecular beam epitaxy",
Journal of Crystal Growth 184/185 (1998) 274--278.

M. Hussain, S. Kuroda, K. Takita;
"Peak effect observed in Zn doped YBCO single crystals"
Physica C 297 (1998) 176--184.
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最近の国際会議

2005年
N.Nishizawa, S.Marcet, N.Ozaki, S.Kuroda, and K.Takita
"Significant Enhancement of Ferromagnetism by n-type Doping in(Zn,Cr)Te"
The 12th International Conference on II-VI Compounds, Warsaw, Poland, September 12-16, 2005

J.W.Lee, S.Kuroda, and K.Takita
"Anisotropic Magnetic Properties of Zn1-xCoxO Thin Filims Grown by Pulsed Laser Deposition"
The 12th International Conference on II-VI Compounds,Warsaw, Poland, September 12-16, 2005

N.Nishizawa, T.Kumekawa, S.Marcet, N.Ozaki, S.Kuroda, and K.Takita
"Effect of carrier doping on the magnetic properties of Zn1-xCrxTe"
The 3rd International School and Conference on Semiconductor Spintronics and Quantum Information Technology (SPINTECH III),Awaji Island, Hyogo, Japan, August 1-5, 2005

J.W.Lee, S.Kuroda, and K.Takita
"Anisotropic magneto-transport properties of Zn1-xCoxO thin films grown by pused laser deposition"
The 3rd International School and Conference on Semiconductor Spintronics and Quantum Information Technology (SPINTECH III),Awaji Island, Hyogo, Japan, August 1-5, 2005
2004年
N. Ozaki, N. Nishizawa, S. Kuroda, and K. Takita,
“MBE growth of novel diluted magnetic semiconductor Zn1-xCrxTe”
14th International Conference on Crystal Growth (ICCG-14),Alpes Congres, Grenoble France, August 9-13, 2004

N. Ozaki, N. Nishizawa, S. Kuroda, and K. Takita,
“Magnetic properties of un-doped and N-doped Zn1-xCrxTe grown by MBE”
27th International Conference on the Physics of Semiconductors (ICPS-27),Flagstaff, Arizona USA, July 26-30,2004

N. Ozaki, N. Nishizawa, S. Kuroda, and K. Takita,
“Magnetic behaviors of ferromagnetic semiconductor Zn1-xCrxTe grown by MBE”
The 3rd International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors (PASPS III),Santa Barbara, California USA, July 21-23, 2004

N. Ozaki, N. Nishizawa, S. Kuroda, and K. Takita,
“Magnetic and structural properties of MBE-grown Zn1-xCrxTe films”
International Conference on Nanospintronics Design and Realization (ICNDR),Kyoto, Japan May 24-28, 2004
2003年
N. Ozaki, N. Nishizawa, K.-T. Nam, S. Kuroda, and K. Takita,
“Magnetic and transport properties of MBE-grown Zn1-xCrxTe and N-doped Zn1-xCrxTe”
11th International Conference on II-VI compounds,Niagara Falls, N.Y. USA, Sep. 22-26, 2003

K.-T. Nam, S. Kuroda, T. Kumekawa, N. Ozaki, and K. Takita
“Magnetotransport and magnetic properties of p-Zn1-xMnxTe:N -Carrier-induced ferromagnetism-”
11th International Conference on II-VI compounds,Niagara Falls, N.Y. USA, Sep. 22-26, 2003

A. Yuzawa, T. Iwazaki, N. Ozaki, S. Kuroda, K. Takita, K. Sato, Y. Imanaka, T. Takamasu, and G. Kido,
“The carrier concentration dependence of magneto-photoluminescence in n-type modulationdoped Cd1-xMnxTe/Cd1-yMgyTe single quantum wells”
15th Int. Conf. on Electronic Properties of Two-Dimensional Systems (EP2DS-15), Nara, Japan, July 14-18, 2003

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