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Anisotropic Modification of the Effective Hole $G$-factor by Electrostatic Confinement by Koduvayur, S. P.; Rokhinson, L. P.; Tsui, D. C.; Pfeiffer, L. N.; West, K. W. is a scholarly article available to read on EtoBox.

What is Anisotropic Modification of the Effective Hole $G$-factor by Electrostatic Confinement about?

We investigate effects of lateral confinement on spin splitting of energy levels in 2D hole gases grown on [311] GaAs. We found that lateral confinement enhances anisotropy of spin splitting relative to the 2D gas for both confining directions. Unexpectedly, the effective $g$-factor does not depend on the 1D energy level number $N$ for $B\|[0\bar{1}1]$ while it has strong $N$-dependence for $B\|[\bar{2}33]$. Apart from quantitative difference in the spin splitting of energy levels for the two orthogonal confinement directions we also report qualitative differences in the appearance of spin-split plateaus, with non-quantized plateaus observed only for the confinement in $[0\bar{1}1]$ direction. In our samples we can clearly associate the difference with anisotropy of spin-orbit interactions.

Author

Koduvayur, S. P.; Rokhinson, L. P.; Tsui, D. C.; Pfeiffer, L. N.; West, K. W.

Published

2008

Language

EN