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dc.contributor.authorHamad, Ignacio Javierpt_BR
dc.contributor.authorManuel, Luis Oscarpt_BR
dc.contributor.authorMartinez Pino, Gerardo Guidopt_BR
dc.contributor.authorTrumper, Adolfo E.pt_BR
dc.date.accessioned2014-10-09T02:13:11Zpt_BR
dc.date.issued2006pt_BR
dc.identifier.issn1098-0121pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104308pt_BR
dc.description.abstractWe have analyzed the dynamics of a single hole doped in a canted antiferromagnet using the t-J model. Within the self-consistent Born approximation we have found that the hole propagates at two different energy scales along the antiferromagnetic and the ferromagnetic components of the canted order, respectively. While the many body quasiparticle excitation has its origin in the coherent coupling of the hole with the magnon excitations of the antiferromagnetic component, the ferromagnetic component gives rise to a free-like hole motion at higher energies. We have found a nontrivial behavior of the hole spectral function with the canting angle θ. In particular, in the strong coupling regime, the quasiparticle weight strongly depends on the momenta, vanishing inside the magnetic Brillouin zone for θ >~60°.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter. New York. Vol. 74, no. 9 (Sept. 2006), 094417 8p.pt_BR
dc.rightsOpen Accessen
dc.subjectFísicapt_BR
dc.titleHole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitationspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000559949pt_BR
dc.type.originEstrangeiropt_BR


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