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Investigation of inter-valley scattering and hot phonon dynamics in GaAs quantum wells using femtosecond luminescence intensity correlation

Abstract:
Photoluminescence intensity correlation measurements of GaAs quantum wells using 120 fs laser pulses show relatively slow relaxation times ≤ 10 ps at high energy close to the L valley conduction band minimum. This value is consistent with recent measurements of the L → Γ scattering time. However, theoretical estimates show that nonequilibrium phonon effects can also give rise to slow relaxation on this timescale.

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Authors


de Paula, AM More by this author
Taylor, RA More by this author
Bradley, CWW More by this author
Turberfield, AJ More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
Journal:
Superlattices and Microstructures
Volume:
6
Issue:
2
Pages:
199-202
Publication date:
1989
DOI:
EISSN:
1096-3677
ISSN:
0749-6036
URN:
uuid:1f909004-0979-4c50-9f0b-8e7b59dd070f
Source identifiers:
134646
Local pid:
pubs:134646
Language:
English

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