Phys. Rev. B 76, 073313 (2007) [4 pages]Large variations in the hole spin splitting of quantum-wire subband edgesReceived 27 July 2007; published 24 August 2007 We study Zeeman splitting of zone-center subband edges in a cylindrical hole wire subject to a magnetic field parallel to its axis. The g factor turns out to fluctuate strongly as a function of wire subband index, assuming values that differ substantially from those found in higher-dimensional systems. We analyze the spin properties of hole-wire states using invariants of the spin-3∕2 density matrix and find a strong correlation between g-factor value and the profile of hole spin-polarization density. Our results suggest possibilities for confinement engineering of hole spin splittings. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.76.073313
DOI:
10.1103/PhysRevB.76.073313
PACS:
73.21.Hb, 71.70.Ej, 72.25.Dc
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.