Phys. Rev. B 78, 161301(R) (2008) [4 pages]Enhancement of valley susceptibility upon complete spin polarization
Measurements on a two-dimensional electron system confined to an AlAs quantum well reveal that for a given electron density the valley susceptibility, defined as the change in valley population difference per unit strain, is enhanced as the system makes a transition from partial to full spin polarization. This observation is reminiscent of earlier studies in which the spin susceptibility of AlAs electrons was observed to be higher in a single-valley system than its two-valley counterpart. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.78.161301
DOI:
10.1103/PhysRevB.78.161301
PACS:
73.23.−b, 73.50.Dn, 73.21.Fg
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