Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

H. Otake; T. Kuroda; T. Fujita; T. Ushiyama; A. Tackeuchi; T. Chinone; J. H. Liang; M. Kajikawa

doi:10.1063/1.2374686

Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

H. Otake^*, T. Kuroda, T. Fujita, T. Ushiyama, A. Tackeuchi, T. Chinone, J. H. Liang, M. Kajikawa

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].

Original language	English
Article number	182110
Journal	Applied Physics Letters
Volume	89
Issue number	18
DOIs	https://doi.org/10.1063/1.2374686
Publication status	Published - 2006

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2374686

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@article{9a1b005db54842d587ba9a5fca871a44,

title = "Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN",

abstract = "The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].",

author = "H. Otake and T. Kuroda and T. Fujita and T. Ushiyama and A. Tackeuchi and T. Chinone and Liang, {J. H.} and M. Kajikawa",

note = "Funding Information: The authors would like to thank M. Nakajima and Y. Ogawa for their help in the measurements. This work was supported in part by a Grant-in-Aid for Scientific Research (No. 18360042), the 21st Century COE Program (Physics of Self-Organization Systems), Academic Frontier Project, and the High-Tech Research Center Project from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

year = "2006",

doi = "10.1063/1.2374686",

language = "English",

volume = "89",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

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TY - JOUR

T1 - Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

AU - Otake, H.

AU - Kuroda, T.

AU - Fujita, T.

AU - Ushiyama, T.

AU - Tackeuchi, A.

AU - Chinone, T.

AU - Liang, J. H.

AU - Kajikawa, M.

N1 - Funding Information: The authors would like to thank M. Nakajima and Y. Ogawa for their help in the measurements. This work was supported in part by a Grant-in-Aid for Scientific Research (No. 18360042), the 21st Century COE Program (Physics of Self-Organization Systems), Academic Frontier Project, and the High-Tech Research Center Project from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2006

Y1 - 2006

N2 - The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].

AB - The spin relaxation process of acceptor-bound excitons in wurtzite GaN is observed by spin-dependent pump and probe reflectance measurement with subpicosecond time resolution. The time evolutions measured at 15-50 K have a single exponential component corresponding to the electron spin relaxation time of 1.40-1.14 ps. The spin relaxation time is found to be proportional to T-0.175, where T is the temperature. This weak temperature dependence indicates that the main spin relaxation mechanism is the Bir-Aronov-Pikus process [Sov. Phys. JETP 42, 705 (1976)].

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U2 - 10.1063/1.2374686

DO - 10.1063/1.2374686

M3 - Article

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SN - 0003-6951

VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 182110

ER -

Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

Abstract

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