| Autor: |
Tackeuchi, Atsushi, Otake, Hirotaka, Ogawa, Yusuke, Ushiyama, Takafumi, Fujita, Taisuke, Takano, Fumiyoshi, Akinaga, Hiro |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 4/17/2006, Vol. 88 Issue 16, p162114, 3p, 1 Diagram, 3 Graphs |
| Abstrakt: |
The excitonic spin relaxation process in cubic GaN is observed by spin-dependent pump and probe reflectance measurements with subpicosecond time resolution. The spin polarization presents at temperatures lower than 100 K. 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 subpicosecond 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 zinc blende semiconductors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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