Observation of Quantum Hall Valley Skyrmions

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dc.creatorShkolnikov, Y. P.
dc.creatorMisra, S.
dc.creatorBishop, N. C.
dc.creatorDe Poortere, E. P.
dc.creatorShayegan, M.
dc.date2005-05-05
dc.date.accessioned2026-07-07T03:05:04Z
dc.date.available2026-07-07T03:05:04Z
dc.descriptionWe report measurements of the interaction-induced quantum Hall effect in a spin-polarized AlAs two-dimensional electron system where the electrons occupy two in-plane conduction band valleys. Via the application of in-plane strain, we tune the energies of these valleys and measure the energy gap of the quantum Hall state at filling factor $ν$ = 1. The gap has a finite value even at zero strain and, with strain, rises much faster than expected from a single-particle picture, suggesting that the lowest energy charged excitations at $ν=1$ are "valley Skyrmions".
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0505118
dc.identifierhttp://arxiv.org/abs/cond-mat/0505118
dc.identifierPhys. Rev. Lett. 95, 066809 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.066809
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26317
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleObservation of Quantum Hall Valley Skyrmions
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