Impurity susceptibility and the fate of spin-flop transitions in lightly-doped La(2)CuO(4)

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dc.creatorNeto, M. B. Silva
dc.creatorBenfatto, L.
dc.date2006-11-07
dc.date2007-02-02
dc.date.accessioned2026-07-07T07:55:48Z
dc.date.available2026-07-07T07:55:48Z
dc.descriptionWe investigate the occurrence of a two-step spin-flop transition and spin reorientation when a longitudinal magnetic field is applied to lightly hole-doped La(2)CuO(4). We find that for large and strongly frustrating impurities, such as Sr in La(2-x)Sr(x)CuO(4), the huge enhancement of the longitudinal susceptibility suppresses the intermediate flop and the reorientation of spins is smooth and continuous. Contrary, for small and weakly frustrating impurities, such as O in La(2)CuO(4+y), a discontinuous spin reorientation (two-step spin-flop transition) takes place. Furthermore, we show that for La(2-x)Sr(x)CuO(4) the field dependence of the magnon gaps differs qualitatively from the La(2)CuO(4) case, a prediction to be verified with Raman spectroscopy or neutron scattering.
dc.description4 pages, 3 figures, For the connection between spin-flops and magnetoresistance, see cond-mat/0610818
dc.identifierhttps://arxiv.org/abs/cond-mat/0611183
dc.identifierhttp://arxiv.org/abs/cond-mat/0611183
dc.identifierPhys. Rev. B 75, 140501(R) (2007)
dc.identifierdoi:10.1103/PhysRevB.75.140501
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/127092
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleImpurity susceptibility and the fate of spin-flop transitions in lightly-doped La(2)CuO(4)
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