Journal
PHYSICAL REVIEW B
Volume 84, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.84.121202
Keywords
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Funding
- Canada Foundation for Innovation
- Natural Sciences and Engineering Research Council of Canada
- Lockheed Martin Corporation
- Canada Research Chairs Program
- National Science Foundation [DMR10-05851]
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Four-wave mixing experiments on GaMnAs indicate an increase in the optical response near the band gap with increasing Mn concentration. These findings are attributed to (s,p)-d hybridization, which leads to an enhancement in the density of states in the valence band. Our experiments show that the nonlinearity of the four-wave mixing technique provides a highly sensitive probe for Mn-related changes in the electronic structure of GaMnAs.
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