Dependence of spin susceptibility of a two-dimensional electron system on the valley degree of freedom

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dc.creatorShkolnikov, Y. P.
dc.creatorVakili, K.
dc.creatorDe Poortere, E. P.
dc.creatorShayegan, M.
dc.date2004-02-15
dc.date.accessioned2026-07-07T02:56:30Z
dc.date.available2026-07-07T02:56:30Z
dc.descriptionWe report measurements of the spin susceptibility, $χ\propto g_v g^*m^*$, in an AlAs two-dimensional electron system where, via the application of in-plane stress, we transfer electrons from one conduction-band valley to another ($g_v$ is the valley degeneracy, and $m^*$ and $g^*$ are the electron effective mass and g-factor). At a given density, when the two valleys are equally populated ($g_v=2$), the measured $g^*m^*$ is smaller than when only one valley is occupied ($g_v=1$). This observation counters the common assumption that a two-valley two-dimensional system is effectively more dilute than a single-valley system because of its smaller Fermi energy.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0402399
dc.identifierhttp://arxiv.org/abs/cond-mat/0402399
dc.identifierPhys. Rev. Lett. 92, 246804 (2004)
dc.identifierdoi:10.1103/PhysRevLett.92.246804
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23345
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleDependence of spin susceptibility of a two-dimensional electron system on the valley degree of freedom
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