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Magnetooptics of III-V Compounds in Many Band Model Approach

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Obuchowicz A., Wlasak J.

Acta Physica Polonica A

1991

vol. 79

issue 2-3

329-332

III-V semiconducting compounds in the presence of a magnetic field are considered. The 14 x 14 effective hamiltonian in the frame of 5-level model is obtained. Directional dependence of selection rules are obtained. Shallow donor levels in the frame of spherical 3-level model are also considered. New trial functions suitable for a whole range of magnetic field are proposed. It is found that the energy as well as the variational function of each magnetodonor level is a continuous function of the magnetic field.

Ground Shallow Donor State of III-V Compounds for Arbitrary Magnetic Field

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Obuchowicz A., Własak J.

Acta Physica Polonica A

1992

vol. 82

issue 4

693-696

Theory of shallow donor in III-V semiconductors in the presence of magnetic field is reinvestigated. Considerations are performed within the 3-level Kane model. In order to avoid singularities caused by the Coulomb potential we divide it into short- and long-range components. The latter one is the slowly varying potential and contrary to the Coulomb potential it satisfies all demands for envelope function equation. The short-range part is contributing to a chemical shift. Calculation of energies of two possible spin states of ground donor level are then performed using variational method.

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2 Acta Physica Polonica A

1 1992

1 1991

2 Obuchowicz A.

1 Wlasak J.

1 Własak J.

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Magnetooptics of III-V Compounds in Many Band Model Approach

Ground Shallow Donor State of III-V Compounds for Arbitrary Magnetic Field