Theory of effective<i>g</i>factors and effective masses in diluted magnetic semiconductors

Hota, R.L.; Tripathi, G. S.; Mohanty, J. N.

doi:10.1103/physrevb.47.9319

Cited by 24 publications

(16 citation statements)

References 41 publications

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“…It may be noted that in the absence of spin-orbit interactions the result can be obtained rather simply, but the spin-orbit effect introduces the complications because of inclusion of orbital interactions. It may be noted that the effective g-factor can also be modified by the conduction electron-local moment hybridization [13,14]. We have not considered it explicitly here.…”

Section: Resultsmentioning

confidence: 97%

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Tripathi

Misra

2010

Journal of Magnetism and Magnetic Materials

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Section: Resultsmentioning

confidence: 97%

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Tripathi

Misra

2010

Journal of Magnetism and Magnetic Materials

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“…To model the magnetic exchange interaction in the presence of the Rashba effect, we treat J = μ B B as a tunable exchange interaction parameter (as, e.g., in Refs. [32,33]) in the trivial Zeeman term H Surf kp,Z 0 . An in-plane orientation of the ferromagnetically ordered 4f moments in the rare-earth layer is implied (specifically, along the y axis, i.e., J = Jŷ).…”

Section: Methods and Resultsmentioning

confidence: 99%

Relativistic splitting of surface states at Si-terminated surfaces of the layered intermetallic compoundsRT2Si2(R=rare earth;T
Nechaev
¹
,
Krasovskii
²

2018
Phys. Rev. B
14
0
28
0
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We present an effective model for surface states at the Si-terminated (001) surface of ternary rare earth (R) intermetallic compounds RT 2 Si 2 with the transition metal element T = Ir or Rh. The model is based on a fully ab initio derivation of the relativistic k•p Hamiltonian and is thereby capable of accurately reproducing the spin polarization of the spin-orbit split surface states, which is very different from the classical Rashba effect. The reliable treatment of spin in our model enables a predictive analysis of the effect of magnetic exchange interaction of the surface-state electrons with ferromagnetically ordered 4f moments of the subsurface rare-earth layer in the magnetic phases of the RT 2 Si 2 compounds.

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“…A unidade de comprimento usada nas figuras é 1Ã=100Å. Os parâmetros usados nos cálculos podem ser encontrados em Hota et al [10]. Na figura 1, temos os níveis de energia para os dois subespaços da expressão (2); na figura 2, aparecem somente os níveis para o subespaço I, pois estes são degenerados em relação aos níveis de energia do subespaço II.…”

Section: Resultsunclassified

Linear Optical Properties in PbTe Quantum Dots

Prado¹

2013

Revista Ciencias Exatas E Naturais

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Resumo: Neste trabalho, estudam-se teoricamente, as propriedades ópticas lineares, como o coeficiente de absorção, a função dielétrica e o índice de refração, em um ponto quânticos esférico e semi-esférico de PbTe. Com o objetivo de compreender como a mudança de geometria e de tamanho afetam as propriedades lineares, foi realizado um estudo sistemático dos autovalores de energia, das funções de onda e das simetrias dominantes dentro do modelo k.p 4×4 de Kane-Dimmock. Os resultados obtidos mostram a possibilidade de se controlar tanto a função dielétrica quanto o ín-dice de refração, por meio da constante de espalhamento homogêneo e do tamanho e da geometria do ponto quântico.Palavras-chave: absorção óptica; função dielétrica; índice de refração; ponto quân-tico.Abstract: In this work it is studied theoretically the linear optical properties such as absorption coefficient, the dielectric function and the index of refraction quantum dot in a spherical or semi-spherical PbTe. In order to understand how the change in geometry and size affects the linear properties, we performed a systematic study of the energy eigenvalues, the wave functions and symmetries within the dominant model 4 × 4 k.p Kane-Dimmock. The results show the possibility of controlling both the dielectric function and the refractive index through the constant homogeneous scattering and the size and geometry of the quantum dots.

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Theory of effectivegfactors and effective masses in diluted magnetic semiconductors

Cited by 24 publications

References 41 publications

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Relativistic splitting of surface states at Si-terminated surfaces of the layered intermetallic compoundsRT2Si2(R=rare earth;T
Nechaev
¹
,
Krasovskii
²

2018
Phys. Rev. B
14
0
28
0
View full text Add to dashboard Cite

Linear Optical Properties in PbTe Quantum Dots

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Theory of effectivegfactors and effective masses in diluted magnetic semiconductors

Cited by 24 publications

References 41 publications

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Many-body theory of magnetization of Bloch electrons in the presence of spin–orbit interactions

Relativistic splitting of surface states at Si-terminated surfaces of the layered intermetallic compoundsRT2Si2(R=rare earth;TNechaev1, Krasovskii2 2018Phys. Rev. B140280View full textAdd to dashboardCite

Linear Optical Properties in PbTe Quantum Dots

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About

Relativistic splitting of surface states at Si-terminated surfaces of the layered intermetallic compoundsRT2Si2(R=rare earth;T
Nechaev
¹
,
Krasovskii
²

2018
Phys. Rev. B
14
0
28
0
View full text Add to dashboard Cite