1301.7493 (A. Srinivasan et al.)

Using a tunable quantum wire to measure the large out-of-plane spin
splitting of quasi two-dimensional holes in a GaAs nanostructure    [PDF]

A. Srinivasan, L. A. Yeoh, O. Klochan, T. P. Martin, J. C. H. Chen, A. P. Micolich, A. R. Hamilton, D. Reuter, A. D. Wieck

The out-of-plane g-factor g_perp for quasi-2D holes in a (100) GaAs heterostructure is studied using a variable width quantum wire. A direct measurement of the Zeeman splitting is performed in a magnetic field applied perpendicular to the 2D plane. We measure an out-of-plane g-factor up to g_perp = 5, which is larger than previous optical studies of g_perp, and is approaching the long predicted but never experimentally veri?ed out-of-plane g-factor of 7.2 for heavy holes.

View original: http://arxiv.org/abs/1301.7493