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Theory of Cyclotron Resonance and Magneto-Optics in n- and p-Type InMnAs in Ultra-high Magnetic Fields |
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| Authors: | G. D. Sanders Y. Sun C. J. Stanton G. A. Khodaparast J. Kono Y. H. Matsuda N. Miura T. Supinski A. Oiwa H. Munekata |
| Affiliation: | (1) Department of Physics, University of Florida, Gainesville, Florida, 32611-8440;(2) Department of Electrical and Computer Engineering, Rice Quantum Institute and Center for Nanoscale Science and Technology, Rice University, Houston, Texas, 77005;(3) Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba, 277-8581, Japan;(4) Department of Physics, Okayama University, Okayama, Japan;(5) Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa, 226-8503, Japan;(6) Institute of Experimental Physics, Warsaw University, Hoza 69, 00-681 Warsaw, Poland |
| Abstract: | We present a theory for the electronic and optical properties of n- and p-type In1–xMnxAs in ultra-high magnetic fields. An eight-band effective mass model based on the Pidgeon–Brown model and including the wavevector dependence of the electronic states as well as the s–d and p–d exchange interactions with Mn d-electrons is used to determine the electronic states. The optical properties such as cyclotron resonance are computed using Fermi's golden rule. Comparison of the theory with ultra-high magnetic field (>50 T) cyclotron resonance experiments shows that the electron cyclotron resonance peak shifts with Mn doping and that the shift allows one to extract the Mn-electron/hole exchange parameters,  and  . The hole cyclotron resonance shows multiple resonance peaks, which we attribute a heavy to heavy and light to light hole transitions. |
| Keywords: | cyclotron resonance dilute magnetic semiconductors ultra-high magnetic fields |
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