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

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Publicado: 2004
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v69_n2_p_Camjayi
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
id paper:paper_10980121_v69_n2_p_Camjayi
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spelling paper:paper_10980121_v69_n2_p_Camjayi2025-07-30T18:43:17Z 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 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. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v69_n2_p_Camjayi 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.
title Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19
spellingShingle 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_10980121_v69_n2_p_Camjayi
http://hdl.handle.net/20.500.12110/paper_10980121_v69_n2_p_Camjayi
_version_ 1840322306151284736

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