Nanosecond excitonic spin relaxation in cubic GaN

Atsushi Tackeuchi, Hirotaka Otake, Yusuke Ogawa, Takafumi Ushiyama, Taisuke Fujita, Fumiyoshi Takano, Hiro Akinaga

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

Abstract

The excitonic spin relaxation in cubic GaN is observed by spin-dependent pump and probe reflectance measurements with sub-picosecond time resolution. The spin relaxation times at 15 - 75 K are found to be longer than 5 ns and short spin relaxation times on the picosecond order are not present. Although these long spin relaxation times are in striking contrast to the sub-picosecond spin relaxation of A-band free excitons in hexagonal GaN, they are consistent with the dependence that spin relaxation time becomes longer for wider-band-gap zincblende semiconductors.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages1335-1336
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

  • Cubic
  • Exciton
  • GaN
  • Spin
  • Spin relaxation
  • Zincblende

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Tackeuchi, A., Otake, H., Ogawa, Y., Ushiyama, T., Fujita, T., Takano, F., & Akinaga, H. (2007). Nanosecond excitonic spin relaxation in cubic GaN. In Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B (pp. 1335-1336). (AIP Conference Proceedings; Vol. 893). https://doi.org/10.1063/1.2730396