Journal
PHYSICAL REVIEW B
Volume 70, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.70.205208
Keywords
-
Ask authors/readers for more resources
We have measured the optical constants of Ga1-xMnxAs from 0.62 to 6 eV, using spectroscopic ellipsometry. The second derivatives of the dielectric function are examined through a critical point analysis, allowing us to inspect interband transitions from different points in k space. The evolution of the band structure over a broad doping range is determined. Specifically, the E-1 critical point shifts to higher energies with increased doping of Mn, while all other critical points appear unaffected. The evolution of the critical points results from the interplay between band-gap renormalization due to ionized impurities and sp-d hybridization of the Mn induced impurity band with GaAs valence and conductions bands.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available