The importance of local band effects for ferromagnetism in hole doped La$_2$CuO$_4$

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dc.creatorBarbiellini, B.
dc.creatorJarlborg, T.
dc.date2008-09-18
dc.date.accessioned2026-07-07T10:10:33Z
dc.date.available2026-07-07T10:10:33Z
dc.descriptionBand calculations for supercells of La$_{(2-x)}$Ba$_x$CuO$_4$ show that the rigid band model for doping is less adequate than what is commonly assumed. In particular, weak ferromagnetism (FM) can appear locally around clusters of high Ba concentration. The clustering is important at large dilution and averaged models for magnetism, such as the virtual crystal approximation, are unable to stabilize magnetic moments. These results give a support to the idea that weak FM can be the cause of the destruction of superconductivity at high hole doping.
dc.description4 pages, 5 figures, accepted for publication in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/0809.3246
dc.identifierhttp://arxiv.org/abs/0809.3246
dc.identifierPhys. Rev. Lett. 101, 157002 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.157002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/171630
dc.subjectSuperconductivity
dc.subjectMaterials Science
dc.titleThe importance of local band effects for ferromagnetism in hole doped La$_2$CuO$_4$
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