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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Autor principal: Camjayi, A.
Otros Autores: Rozenberg, M.J
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 2004
Acceso en línea:Registro en Scopus
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245 1 0 |a Anomalous dynamical spin susceptibility in the SU(N) Heisenberg spin-glass model and SrCr9xGa12-9xO19 
260 |c 2004 
506 |2 openaire  |e Política editorial 
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504 |a Arrachea, L., Rozenberg, M.J., (2002) Phys. Rev. B, 65, p. 224430 
504 |a Camjayi, A., Rozenberg, M.J., (2003) Phys. Rev. Lett, 90, p. 217202 
504 |a Camjayi, A., Rozenberg, M.J., (unpublished) 
520 3 |a 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.  |l eng 
593 |a Departamento de Física, FCEN, Universidad de Buenos Aires, Ciudad Universitaria Pabellón 1, Buenos Aires, 1428, Argentina 
700 1 |a Rozenberg, M.J. 
773 0 |d 2004  |g v. 69  |k n. 2  |p Phys. Rev. B Condens. Matter Mater. Phys.  |x 10980121  |t Physical Review B - Condensed Matter and Materials Physics 
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