Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN

Hirotaka Otake, Takamasa Kuroda, Atsushi Tackeuchi, Kazuyoshi Taniguchi, Takako Chinone, Ji Hao Liang, Masataka Kajikawa, Naochika Horio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 spin relaxation times of 1.40-1.14 ps. The spin relaxation time, τs, is found to be proportional to T-0.175, where T is the temperature. This temperature dependence is quite weak compared with that of A-band free excitons showing τ ≅ T-1.41 at 150-225K.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages1315-1316
Number of pages2
DOIs
Publication statusPublished - 2007 Dec 1
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: 2006 Jul 242006 Jul 28

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference28th International Conference on the Physics of Semiconductors, ICPS 2006
CountryAustria
CityVienna
Period06/7/2406/7/28

Keywords

  • Exciton
  • GaN
  • Spin
  • Spin relaxation
  • Wurtzite

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN'. Together they form a unique fingerprint.

  • Cite this

    Otake, H., Kuroda, T., Tackeuchi, A., Taniguchi, K., Chinone, T., Liang, J. H., Kajikawa, M., & Horio, N. (2007). Picosecond spin relaxation of acceptor-bound exciton in wurtzite GaN. In Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B (pp. 1315-1316). (AIP Conference Proceedings; Vol. 893). https://doi.org/10.1063/1.2730386