Kondo "underscreening" cloud: spin-spin correlations around a partially screened magnetic impurity

Simple item page
dc.creatorBorda, L.
dc.creatorGarst, M.
dc.creatorKroha, J.
dc.date2008-11-06
dc.date.accessioned2026-07-07T12:59:24Z
dc.date.available2026-07-07T12:59:24Z
dc.descriptionWe consider the spatial spin correlations around a partially screened spin-1 magnetic moment in a metal exhibiting the underscreened Kondo effect. We find that the underscreening of the impurity spin results in spatial spin correlations that are more pronounced as compared to the fully screened Kondo effect; their power-law decay is weaker because of characteristic logarithmic corrections at large distances. The spin correlator also changes sign as a function of distance to the impurity allowing for ferromagnetic correlations between conduction electron spin density and the local moment. The numerical findings are shown to be in agreement with the predictions deriving from an effective ferromagnetic Kondo Hamiltonian.
dc.description4+ pages, 2 figures, submitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/0811.1032
dc.identifierhttp://arxiv.org/abs/0811.1032
dc.identifierPhys. Rev. B 79, 100408(R) (2009)
dc.identifierdoi:10.1103/PhysRevB.79.100408
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225561
dc.subjectStrongly Correlated Electrons
dc.titleKondo "underscreening" cloud: spin-spin correlations around a partially screened magnetic impurity
dc.typetext

Files

Collections

arXiv