Novel approach to description of optical and magnetotransport data in dilute magnetic semiconductors near semimetal–semiconductor transition

Tarasov, G. G.; Mazur, Yu. I.; Кузьменко, Е.В.; Belyaev, A. E.; Hoerstel, W.; Kraak, W.; Masselink, W. T.

doi:10.1016/s0022-0248(00)00125-1

Cited by 1 publication

(3 citation statements)

References 9 publications

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“…Since the ratio of the energy E to the band gap energy serves as the main parameter of the theory, the effect in the narrow gap semiconductor is noticeable even for the small values of E. In Fig. 3.11 taken from the paper [53], the experimental dependence of the exchange interaction parameter on the electron energy for the GaMnAs structure is compared with the results of the theoretical model [32]. This comparison demonstrates good agreement between the theory and experiment.…”

Section: Renormalization Of the Exchange Interaction Between Magneticmentioning

confidence: 67%

“…Renormalization of the exchange interaction constants for the electrons with large confinement energy was observed in the papers [32,[52][53][54][55][56]. In [32], the structure based on the widegap semiconductor (CdMnTe) was investigated, while in [52,53] the narrow gap semiconductor structure (HgCdMnSe) was studied.…”

Section: Renormalization Of the Exchange Interaction Between Magneticmentioning

confidence: 99%

“…In [32], the structure based on the widegap semiconductor (CdMnTe) was investigated, while in [52,53] the narrow gap semiconductor structure (HgCdMnSe) was studied. In the papers [54,55], this effect was investigated in GaMnAs structures.…”

Section: Renormalization Of the Exchange Interaction Between Magneticmentioning

confidence: 99%

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Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

Merkulov

Rodina

2010

Introduction to the Physics of Diluted Magnetic Semiconductors

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A very general theoretical discussion of the values of sp d exchange constants is given starting from symmetry properties of diluted magnetic semiconductors. Complex structure of the valence band is fully taken into account with interacting heavy and light holes as well as spin-orbit split-off states kept in the consideration. The form of the Hamiltonian is derived and shown to be, in a general case, anisotropic. A series of approximations is made that reduces the Hamiltionian to a simple form introduced in Chap. 1. Specific cases of two-dimensional quantum wells and zero-dimensional spherical quantum dots are considered. Finally, the role of sp d interaction in spin relaxation processes is discussed. IntroductionIn semiconductor nano-heterostructures the potential energy, that a charge carrier experiences, changes on the length scale that is comparable to the characteristic wavelength of the carriers. In such a case, the quantum-size effects play a dominant role. The quantum confinement significantly affects the exchange interaction between carriers and localized spins of the magnetic ions. The effective exchange Hamiltonian becomes anisotropic because the presence of interfaces reduces the symmetry. In narrow structures with high potential barriers, the quantum confinement changes the ground state energy of the carriers to such an extent that the changes of the ground energy can be comparable to the band gap energy of a bulk

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Section: Renormalization Of the Exchange Interaction Between Magneticmentioning

confidence: 67%

Section: Renormalization Of the Exchange Interaction Between Magneticmentioning

confidence: 99%

See 1 more Smart Citation

Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

Merkulov

Rodina

2010

Introduction to the Physics of Diluted Magnetic Semiconductors

View full text Add to dashboard Cite

show abstract

Novel approach to description of optical and magnetotransport data in dilute magnetic semiconductors near semimetal–semiconductor transition

Cited by 1 publication

References 9 publications

Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

Exchange Interaction Between Carriers and Magnetic Ions in Quantum Size Heterostructures

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