Spin Exciton in quantum dot with spin orbit coupling in high magnetic field

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dc.creatorLucignano, P.
dc.creatorJouault, B.
dc.creatorTagliacozzo, A.
dc.date2003-07-01
dc.date2003-09-12
dc.date.accessioned2026-07-07T02:52:08Z
dc.date.available2026-07-07T02:52:08Z
dc.descriptionCoulomb interactions of few ($ N $) electrons confined in a disk shaped quantum dot, with a large magnetic field $B=B^*$ applied in the z-direction (orthogonal to the dot), produce a fully spin polarized ground state. We numerically study the splitting of the levels corresponding to the multiplet of total spin $S=N/2$ (each labeled by a different total angular momentum $ J_z $) in presence of an electric field parallel to $ B $, coupled to $ S $ by a Rashba term. We find that the first excited state is a spin exciton with a reversed spin at the origin. This is reminiscent of the Quantum Hall Ferromagnet at filling one which has the skyrmion-like state as its first excited state. The spin exciton level can be tuned with the electric field and infrared radiation can provide energy and angular momentum to excite it.
dc.description9 pages, 9 figures. submitted to Phys.Rev.B
dc.identifierhttps://arxiv.org/abs/cond-mat/0307016
dc.identifierhttp://arxiv.org/abs/cond-mat/0307016
dc.identifierPhys.Rev.B 69,045314 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.045314
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21728
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleSpin Exciton in quantum dot with spin orbit coupling in high magnetic field
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