Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory
- Autores
- Mezio, Alejandro; Manuel, Luis Oscar; Singh, Rajiv R. P.; Trumper, Adolfo Emilio
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We study the low temperature properties of the triangular-lattice Heisenberg antiferromagnet with a mean field Schwinger spin- boson scheme that reproduces quantitatively the zero temperature energy spectrum derived previously using series expansions. By analyzing the spin-spin and the boson density-density dynamical structure factors, we identify the unphysical spin excitations that come from the relaxation of the local constraint on bosons. This allows us to reconstruct a free energy based on the physical excitations only, whose predictions for entropy and uniform susceptibility seem to be reliable within the temperature range 0 <= T <= 0.3 J, which is difficult to access by other methods. The high values of entropy, also found in high temperature expansion studies, can be attributed to the roton-like narrowed dispersion at finite temperatures.
Fil: Mezio, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Singh, Rajiv R. P.. University of California; Estados Unidos
Fil: Trumper, Adolfo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina - Materia
-
STRONG CORRELATION
QUANTIZED SPIN MODEL
QUANTUM SPIN FRUSTRATION
SCHWINGER BOSONS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/271629
Ver los metadatos del registro completo
| id |
CONICETDig_2db6b2a8956961febd051a6d5aeffc33 |
|---|---|
| oai_identifier_str |
oai:ri.conicet.gov.ar:11336/271629 |
| network_acronym_str |
CONICETDig |
| repository_id_str |
3498 |
| network_name_str |
CONICET Digital (CONICET) |
| spelling |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theoryMezio, AlejandroManuel, Luis OscarSingh, Rajiv R. P.Trumper, Adolfo EmilioSTRONG CORRELATIONQUANTIZED SPIN MODELQUANTUM SPIN FRUSTRATIONSCHWINGER BOSONShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the low temperature properties of the triangular-lattice Heisenberg antiferromagnet with a mean field Schwinger spin- boson scheme that reproduces quantitatively the zero temperature energy spectrum derived previously using series expansions. By analyzing the spin-spin and the boson density-density dynamical structure factors, we identify the unphysical spin excitations that come from the relaxation of the local constraint on bosons. This allows us to reconstruct a free energy based on the physical excitations only, whose predictions for entropy and uniform susceptibility seem to be reliable within the temperature range 0 <= T <= 0.3 J, which is difficult to access by other methods. The high values of entropy, also found in high temperature expansion studies, can be attributed to the roton-like narrowed dispersion at finite temperatures.Fil: Mezio, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Singh, Rajiv R. P.. University of California; Estados UnidosFil: Trumper, Adolfo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaIOP Publishing2012-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/271629Mezio, Alejandro; Manuel, Luis Oscar; Singh, Rajiv R. P.; Trumper, Adolfo Emilio; Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory; IOP Publishing; New Journal of Physics; 14; 12; 12-2012; 1-161367-2630CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/1367-2630/14/12/123033info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/14/12/123033info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:10:47Zoai:ri.conicet.gov.ar:11336/271629instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:10:47.452CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| title |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| spellingShingle |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory Mezio, Alejandro STRONG CORRELATION QUANTIZED SPIN MODEL QUANTUM SPIN FRUSTRATION SCHWINGER BOSONS |
| title_short |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| title_full |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| title_fullStr |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| title_full_unstemmed |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| title_sort |
Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory |
| dc.creator.none.fl_str_mv |
Mezio, Alejandro Manuel, Luis Oscar Singh, Rajiv R. P. Trumper, Adolfo Emilio |
| author |
Mezio, Alejandro |
| author_facet |
Mezio, Alejandro Manuel, Luis Oscar Singh, Rajiv R. P. Trumper, Adolfo Emilio |
| author_role |
author |
| author2 |
Manuel, Luis Oscar Singh, Rajiv R. P. Trumper, Adolfo Emilio |
| author2_role |
author author author |
| dc.subject.none.fl_str_mv |
STRONG CORRELATION QUANTIZED SPIN MODEL QUANTUM SPIN FRUSTRATION SCHWINGER BOSONS |
| topic |
STRONG CORRELATION QUANTIZED SPIN MODEL QUANTUM SPIN FRUSTRATION SCHWINGER BOSONS |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We study the low temperature properties of the triangular-lattice Heisenberg antiferromagnet with a mean field Schwinger spin- boson scheme that reproduces quantitatively the zero temperature energy spectrum derived previously using series expansions. By analyzing the spin-spin and the boson density-density dynamical structure factors, we identify the unphysical spin excitations that come from the relaxation of the local constraint on bosons. This allows us to reconstruct a free energy based on the physical excitations only, whose predictions for entropy and uniform susceptibility seem to be reliable within the temperature range 0 <= T <= 0.3 J, which is difficult to access by other methods. The high values of entropy, also found in high temperature expansion studies, can be attributed to the roton-like narrowed dispersion at finite temperatures. Fil: Mezio, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina Fil: Singh, Rajiv R. P.. University of California; Estados Unidos Fil: Trumper, Adolfo Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina |
| description |
We study the low temperature properties of the triangular-lattice Heisenberg antiferromagnet with a mean field Schwinger spin- boson scheme that reproduces quantitatively the zero temperature energy spectrum derived previously using series expansions. By analyzing the spin-spin and the boson density-density dynamical structure factors, we identify the unphysical spin excitations that come from the relaxation of the local constraint on bosons. This allows us to reconstruct a free energy based on the physical excitations only, whose predictions for entropy and uniform susceptibility seem to be reliable within the temperature range 0 <= T <= 0.3 J, which is difficult to access by other methods. The high values of entropy, also found in high temperature expansion studies, can be attributed to the roton-like narrowed dispersion at finite temperatures. |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012-12 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/271629 Mezio, Alejandro; Manuel, Luis Oscar; Singh, Rajiv R. P.; Trumper, Adolfo Emilio; Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory; IOP Publishing; New Journal of Physics; 14; 12; 12-2012; 1-16 1367-2630 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/271629 |
| identifier_str_mv |
Mezio, Alejandro; Manuel, Luis Oscar; Singh, Rajiv R. P.; Trumper, Adolfo Emilio; Low temperature properties of the triangular-lattice antiferromagnet: a bosonic spinon theory; IOP Publishing; New Journal of Physics; 14; 12; 12-2012; 1-16 1367-2630 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/1367-2630/14/12/123033 info:eu-repo/semantics/altIdentifier/doi/10.1088/1367-2630/14/12/123033 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
| dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
IOP Publishing |
| publisher.none.fl_str_mv |
IOP Publishing |
| dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
| reponame_str |
CONICET Digital (CONICET) |
| collection |
CONICET Digital (CONICET) |
| instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
| _version_ |
1846781473571471360 |
| score |
12.982451 |