Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Kyrychenko, F. V."'
Autor:
Kyrychenko, F. V., Ullrich, C. A.
A theory of the electronic response in spin and charge disordered media is developed with the particular aim to describe III-V dilute magnetic semiconductors like GaMnAs. The theory combines a detailed k.p description of the valence band, in which th
Externí odkaz:
http://arxiv.org/abs/1101.5418
Autor:
Kyrychenko, F. V., Ullrich, C. A.
The static conductivity of the dilute magnetic semiconductor GaMnAs is calculated using the memory function formalism and time-dependent density-functional theory to account for impurity scattering and to treat Hartree and exchange interactions withi
Externí odkaz:
http://arxiv.org/abs/0906.3526
In semiconductors with inversion asymmetry, spin-orbit coupling gives rise to the well-known Dresselhaus and Rashba effects. If one considers quantum wells with two or more conduction subbands, an additional, intersubband-induced spin-orbit term appe
Externí odkaz:
http://arxiv.org/abs/0710.2866
Autor:
Kyrychenko, F. V., Ullrich, C. A.
A combination of the memory function formalism and time-dependent density-functional theory is applied to transport in dilute magnetic semiconductors. The approach considers spin and charge disorder and electron-electron interaction on an equal footi
Externí odkaz:
http://arxiv.org/abs/0704.2061
Autor:
Kyrychenko, F. V., Ullrich, C. A.
In III-V dilute magnetic semiconductors (DMSs) such as Ga$_{1-x}$Mn$_x$As, the impurity positions tend to be correlated, which can drastically affect the electronic transport properties of these materials. Within the memory function formalism we have
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607177
Autor:
Sun, Y., Kyrychenko, F. V., Sanders, G. D., Stanton, C. J., Khodaparast, G. A., Kono, J., Matsuda, Y. H., Munekata, H.
We present a theoretical and experimental study on electronic and magneto-optical properties of p-type paramagnetic InMnAs dilute magnetic semiconductor alloys and ferromagnetic p-type InMnAs/(Al,Ga)Sb thin films in ultrahigh (> 100 T) external magne
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510323
Autor:
Jho, Y. D., Kyrychenko, F. V., Kono, J., Wei, X., Crooker, S. A., Sanders, G. D., Reitze, D. H., Stanton, C. J., Solomon, G. S.
Publikováno v:
Phys. Rev. B 72, 045340 (2005)
Coupled magneto-exciton states between allowed (`bright') and forbidden (`dark') transitions are found in absorption spectra of strained In$_{0.2}$Ga$_{0.8}$As/GaAs quantum wells with increasing magnetic field up to 30 T. We found large (~ 10 meV) en
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410378
Autor:
Matsuda, Y. H., Khodaparas, G. A., Zudov, M. A., Kono, J., Sun, Y., Kyrychenko, F. V., Sanders, G. D., Stanton, C. J., Miura, N., Ikeda, S., Hashimoto, Y., Katsumoto, S., Munekata, H.
Publikováno v:
Phys. Rev. B 70, 195211 (2004)
We have carried out an ultrahigh-field cyclotron resonance study of p-type In1-xMnxAs films, with Mn composition x ranging from 0% to 2.5%, grown on GaAs by low-temperature molecular-beam epitaxy. Pulsed magnetic fields up to 500 T were used to make
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404635
Autor:
Khodaparast, G. A., Kono, J., Matsuda, Y. H., Ikeda, S., Miura, N., Slupinski, T., Oiwa, A., Munekata, H., Sun, Y., Kyrychenko, F. V., Sanders, G. D., Stanton, C. J.
We report the observation of hole cyclotron resonance (CR) in InMnAs/(Al,Ga)Sb heterostructures in a wide temperature range covering both the paramagnetic and ferromagnetic phases. We observed two pronounced resonances that exhibit drastic changes in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307087
Autor:
Sanders, G. D., Sun, Y., Kyrychenko, F. V., Stanton, C. J., Kodaparast, G. A., Zudov, M. A., Kono, J., Matsuda, Y. H., Miura, N., Munekata, H.
Publikováno v:
Physical Review B, 68, 165205 (2003).
We present a theory for electronic and magneto-optical properties of n-type In(1-x)Mn(x)As magnetic alloy semiconductors in a high magnetic field, B. We use an 8-band Pidgeon-Brown model generalized to include the wavevector (Kz) dependence of the el
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304434