Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104308 |
Resumo: | We 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°. |
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Hamad, Ignacio JavierManuel, Luis OscarMartinez Pino, Gerardo GuidoTrumper, Adolfo E.2014-10-09T02:13:11Z20061098-0121http://hdl.handle.net/10183/104308000559949We 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°.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 74, no. 9 (Sept. 2006), 094417 8p.FísicaHole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitationsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000559949.pdf000559949.pdfTexto completo (inglês)application/pdf120479http://www.lume.ufrgs.br/bitstream/10183/104308/1/000559949.pdf48fa1166c62d0712a02c01611acfd602MD51TEXT000559949.pdf.txt000559949.pdf.txtExtracted Texttext/plain37096http://www.lume.ufrgs.br/bitstream/10183/104308/2/000559949.pdf.txt1cad978c6cc3b7f83fa920a9fb4dd810MD52THUMBNAIL000559949.pdf.jpg000559949.pdf.jpgGenerated Thumbnailimage/jpeg2131http://www.lume.ufrgs.br/bitstream/10183/104308/3/000559949.pdf.jpge3f41d686ed77de573bf0964229f09a1MD5310183/1043082018-10-09 08:52:31.246oai:www.lume.ufrgs.br:10183/104308Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-09T11:52:31Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
title |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
spellingShingle |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations Hamad, Ignacio Javier Física |
title_short |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
title_full |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
title_fullStr |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
title_full_unstemmed |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
title_sort |
Hole dynamics in canted antiferromagnets : coexistence of many-body and free-like excitations |
author |
Hamad, Ignacio Javier |
author_facet |
Hamad, Ignacio Javier Manuel, Luis Oscar Martinez Pino, Gerardo Guido Trumper, Adolfo E. |
author_role |
author |
author2 |
Manuel, Luis Oscar Martinez Pino, Gerardo Guido Trumper, Adolfo E. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Hamad, Ignacio Javier Manuel, Luis Oscar Martinez Pino, Gerardo Guido Trumper, Adolfo E. |
dc.subject.por.fl_str_mv |
Física |
topic |
Física |
description |
We 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°. |
publishDate |
2006 |
dc.date.issued.fl_str_mv |
2006 |
dc.date.accessioned.fl_str_mv |
2014-10-09T02:13:11Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/104308 |
dc.identifier.issn.pt_BR.fl_str_mv |
1098-0121 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000559949 |
identifier_str_mv |
1098-0121 000559949 |
url |
http://hdl.handle.net/10183/104308 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensed matter. New York. Vol. 74, no. 9 (Sept. 2006), 094417 8p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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