Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19

We solve the SU(N) Heisenberg spin-glass model in the limit of large N focusing on the dynamical spin susceptibility. We show that the results for the model at S = 3/2, which is appropriate for the SrCr9xGa 12-9xO19 compound, have a qualitative behavior in close agreement with neutron-scattering dat...

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Autores principales: Camjayi, Alberto, Rozenberg, Marcelo Javier
Publicado: 2004
Materias:
chromium
gallium
glass
oxygen
strontium
article
glass transition temperature
mathematical analysis
neutron scattering
qualitative analysis
quantum mechanics
spectroscopy
spin labeling
thermal analysis
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v69_n2_p204041_Camjayi
http://hdl.handle.net/20.500.12110/paper_01631829_v69_n2_p204041_Camjayi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01631829_v69_n2_p204041_Camjayi
record_format dspace
spelling paper:paper_01631829_v69_n2_p204041_Camjayi2023-06-08T15:14:02Z Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19 Camjayi, Alberto Rozenberg, Marcelo Javier chromium gallium glass oxygen strontium article glass transition temperature mathematical analysis neutron scattering qualitative analysis quantum mechanics spectroscopy spin labeling thermal analysis We solve the SU(N) Heisenberg spin-glass model in the limit of large N focusing on the dynamical spin susceptibility. We show that the results for the model at S = 3/2, which is appropriate for the SrCr9xGa 12-9xO19 compound, have a qualitative behavior in close agreement with neutron-scattering data. Quantum fluctuations produce a significant transfer of spectral weight to higher frequencies, while thermal fluctuations are responsible for a dramatic change in the low-frequency part of the dynamical spin susceptibility where T becomes comparable to the spin-glass transition temperature. Fil:Camjayi, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rozenberg, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v69_n2_p204041_Camjayi http://hdl.handle.net/20.500.12110/paper_01631829_v69_n2_p204041_Camjayi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic chromium
gallium
glass
oxygen
strontium
article
glass transition temperature
mathematical analysis
neutron scattering
qualitative analysis
quantum mechanics
spectroscopy
spin labeling
thermal analysis
spellingShingle chromium
gallium
glass
oxygen
strontium
article
glass transition temperature
mathematical analysis
neutron scattering
qualitative analysis
quantum mechanics
spectroscopy
spin labeling
thermal analysis
Camjayi, Alberto
Rozenberg, Marcelo Javier
Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
topic_facet chromium
gallium
glass
oxygen
strontium
article
glass transition temperature
mathematical analysis
neutron scattering
qualitative analysis
quantum mechanics
spectroscopy
spin labeling
thermal analysis
description We solve the SU(N) Heisenberg spin-glass model in the limit of large N focusing on the dynamical spin susceptibility. We show that the results for the model at S = 3/2, which is appropriate for the SrCr9xGa 12-9xO19 compound, have a qualitative behavior in close agreement with neutron-scattering data. Quantum fluctuations produce a significant transfer of spectral weight to higher frequencies, while thermal fluctuations are responsible for a dramatic change in the low-frequency part of the dynamical spin susceptibility where T becomes comparable to the spin-glass transition temperature.
author Camjayi, Alberto
Rozenberg, Marcelo Javier
author_facet Camjayi, Alberto
Rozenberg, Marcelo Javier
author_sort Camjayi, Alberto
title Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
title_short Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
title_full Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
title_fullStr Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
title_full_unstemmed Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
title_sort anomalous dynamical spin susceptibility in the su(n) heisenberg spin-glass model and srcr9xga12-9xo19
publishDate 2004
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v69_n2_p204041_Camjayi
http://hdl.handle.net/20.500.12110/paper_01631829_v69_n2_p204041_Camjayi
work_keys_str_mv AT camjayialberto anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19
AT rozenbergmarcelojavier anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19
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