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

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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 SrCr9xGa12-9xO19 compound, have a qualitative behavior in close agreement with neutron-scattering data...

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Autores principales: Camjayi, A., Rozenberg, M.J.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10980121_v69_n2_p_Camjayi
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10980121_v69_n2_p_Camjayi2023-10-03T16:05:51Z Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19 Camjayi, A. Rozenberg, M.J. 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 SrCr9xGa12-9xO19 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. © 2004 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10980121_v69_n2_p_Camjayi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
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 SrCr9xGa12-9xO19 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. © 2004 The American Physical Society.
format JOUR
author Camjayi, A.
Rozenberg, M.J.
spellingShingle Camjayi, A.
Rozenberg, M.J.
Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
author_facet Camjayi, A.
Rozenberg, M.J.
author_sort Camjayi, A.
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
url http://hdl.handle.net/20.500.12110/paper_10980121_v69_n2_p_Camjayi
work_keys_str_mv AT camjayia anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19
AT rozenbergmj anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19
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