Spin-droplets in confined quantum Hall systems

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dc.creatorRasanen, E.
dc.creatorSaarikoski, H.
dc.creatorHarju, A.
dc.creatorCiorga, M.
dc.creatorSachrajda, A. S.
dc.date2007-12-06
dc.date.accessioned2026-07-07T09:37:25Z
dc.date.available2026-07-07T09:37:25Z
dc.descriptionTwo-dimensional semiconductor quantum dots are studied in the the filling-factor range 2<v<3. We find both theoretical and experimental evidence of a collective many-body phenomenon, where a fraction of the trapped electrons form an incompressible spin-droplet on the highest occupied Landau level. The phenomenon occurs only when the number of electrons in the quantum dot is larger than ~30. We find the onset of the spin-droplet regime at v=5/2. This proposes a finite-geometry alternative to the Moore-Read-type Pfaffian state of the bulk two-dimensional electron gas. Hence, the spin-droplet formation may be related to the observed fragility of the v=5/2 quantum Hall state in narrow quantum point contacts.
dc.descriptionTo appear in Phys. Rev. B (Rapid. Comm.)
dc.identifierhttps://arxiv.org/abs/0712.0991
dc.identifierhttp://arxiv.org/abs/0712.0991
dc.identifierPhys. Rev. B 77, 041302(R) (2008)
dc.identifierdoi:10.1103/PhysRevB.77.041302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/160452
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleSpin-droplets in confined quantum Hall systems
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