Journal
PHYSICAL REVIEW B
Volume 85, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.125313
Keywords
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Funding
- National Science Foundation [DMR-0846834, DMR-0800479, DMR-0706313, DMR-1105437, DMR-0654118]
- National High Magnetic Field Laboratory through a UCGP
- State of Florida
- US Department of Energy
- DOE [DE-FG02-02ER45984]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0804479, 0846834] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1105437] Funding Source: National Science Foundation
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We measured time-resolved differential transmission in InMnAs for different pump/probe schemes as a function of temperature, laser fluence, and external magnetic field. We observed tunability of the carrier relaxation time. In addition, we found that the sign of the differential transmission changed as a function of probe wavelength. The electronic structure for InMnAs was calculated for B = 0, using an eight-band k.p model, which includes conduction and valence band mixing as well as coupling of electrons and holes to the magnetic Mn impurities. This allows us to explain some of the carrier dynamics and the sign changes in the differential transmission.
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