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Anisotropy of the effective Landé factor in AlxGa1−xAs parabolic quantum wells under applied magnetic fields

✍ Scribed by A. Bruno-Alfonso; N. Raigoza; E. Reyes-Gómez

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
290 KB
Volume
43
Category
Article
ISSN
1386-9477

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✦ Synopsis

The anisotropy of the effective Lande ´factor in Al x Ga 1 À x As parabolic quantum wells under magnetic fields is theoretically investigated. The non-parabolicity and anisotropy of the conduction band are taken into account through the Ogg-McCombe Hamiltonian together with the cubic Dresselhaus spinorbit term. The calculated effective g factor is larger when the magnetic field is applied along the growth direction. As the well widens, its anisotropy increases sharply and then decreases slowly. For the considered field strengths, the anisotropy is maximum for a well width $ 50 Å. Moreover, this anisotropy increases with the field strength and the maximum value of the aluminum concentration within the quantum well.

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