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 SrCr9xGa 12-9xO19 compound, have a qualitative behavior in close agreement with neutron-scattering dat...

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Detalles Bibliográficos
Autores principales:	Camjayi, A., Rozenberg, M.J.
Formato:	JOUR
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:	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	todo:paper_01631829_v69_n2_p204041_Camjayi
record_format	dspace
spelling	todo:paper_01631829_v69_n2_p204041_Camjayi2023-10-03T15:01:58Z Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19 Camjayi, A. Rozenberg, M.J. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, A. Rozenberg, M.J. 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.
format	JOUR
author	Camjayi, A. Rozenberg, M.J.
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_01631829_v69_n2_p204041_Camjayi
work_keys_str_mv	AT camjayia anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19 AT rozenbergmj anomalousdynamicalspinsusceptibilityinthesunheisenbergspinglassmodelandsrcr9xga129xo19
_version_	1782025069187301376

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

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