Effect of orbital currents on the restricted optical sum rule

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dc.creatorBenfatto, L.
dc.creatorSharapov, S. G.
dc.creatorBeck, H.
dc.date2003-05-13
dc.date2004-06-07
dc.date.accessioned2026-07-07T02:51:18Z
dc.date.available2026-07-07T02:51:18Z
dc.descriptionWe derive the restricted optical-conductivity sum rule for a model with circulating orbital currents. It is shown that an unusual coupling of the vector potential to the interaction term of the model Hamiltonian results in a non-standard form of the sum rule. As a consequence, the temperature dependence of the restricted spectral weight could be compatible with existing experimental data for high-$T_c$ cuprates above the critical temperature $T_c$. We extend our results to the superconducting state, and comment on the differences and analogies between these two symmetry-breaking phenomena.
dc.descriptionRevised version, to appear in EPJB
dc.identifierhttps://arxiv.org/abs/cond-mat/0305276
dc.identifierhttp://arxiv.org/abs/cond-mat/0305276
dc.identifierEur. Phys. J. B 39, 469 (2004)
dc.identifierdoi:10.1140/epjb/e2004-00219-5
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21402
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleEffect of orbital currents on the restricted optical sum rule
dc.typetext

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