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Optical probing of the minigap in InAs/GaSb superlattices

Abstract:

We report large modulations in the far infrared absorption of semimetallic InAs/GaSb superlattices in parallel field. The strong absorption is attributed to direct transitions across the minigap at the point where the electron and hole dispersions anticross. The measured minigap energy is found to be in the range 3-10 meV depending on the structure of the sample. The optical results are compared to parallel field magnetoresistance measurements and also to theory using an 8 band k . p calculat...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Condensed Matter Physics
Role:
Author
Journal:
PHYSICA B-CONDENSED MATTER
Volume:
256
Pages:
256-259
Publication date:
1998-12-01
Event title:
13th International Conference on High Magnetic Fields in Semiconductor Physics
DOI:
ISSN:
0921-4526
Source identifiers:
30615
Keywords:
Pubs id:
pubs:30615
UUID:
uuid:3cd0332f-7cf8-4c79-a400-d627e5d5d105
Local pid:
pubs:30615
Deposit date:
2012-12-19

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