Time resolved spectroscopy of MOVPE grown narrow gap ferromagnetic semiconductors

Mithun Bhowmick*, Travis Merritt, Giti A. Khodaparast, Caitlin Feeser, Bruce W Wessels, Stephen McGill, D. Saha, X. Pan, G. D. Sanders, C. J. Stanton

*Corresponding author for this work

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

1 Scopus citations

Abstract

We report on time resolved differential transmission experiments to provide insight into both the time scales and the nature of the microscopic interactions and carrier dynamics in MOVPE grown ferromagnetic InMnAs and InMnSb. Theoretical calculations of the electronic structure for InMnAs are performed using an 8 band kp model which includes non-parabolicity of the conduction bands; strong band-mixing of the valence bands; as well as coupling of Mn impurities to the electrons and holes. Our preliminary theoretical results explain the sign change in the differential transmission signal as a function of probe wavelength.

Original languageEnglish (US)
Title of host publication15th International Conference on Narrow Gap Systems, NGS15
Pages188-191
Number of pages4
Volume1416
DOIs
StatePublished - Dec 1 2011
Event15th International Conference on Narrow Gap Systems, NGS15 - Blacksburg, VA, United States
Duration: Aug 1 2011Aug 5 2011

Other

Other15th International Conference on Narrow Gap Systems, NGS15
CountryUnited States
CityBlacksburg, VA
Period8/1/118/5/11

Keywords

  • Ferromagnetic semiconductors
  • Narrow gap semiconductors
  • Time resolved spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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