Equilibrium magnetization of a spin glass : is mean-field theory valid ?
- 1 January 1982
- journal article
- Published by EDP Sciences in Journal de Physique Lettres
- Vol. 43 (2), 45-53
- https://doi.org/10.1051/jphyslet:0198200430204500
Abstract
Measurement of field cooled magnetization of a AgMn 10.6 % alloy as a function of temperature between 4.2 K and 50 K and magnetic field from 26 to 9 000 gauss is performed in order to link the low field and high field regimes of a spin glass. This can possibly help to define a phase diagram in the (H, T) plane as proposed by De Almeida and Thouless and Parisi and Toulouse. A closer investigation of the vicinity of Tg, above Tg, allows to compare the magnetization curves with the specific prediction of the mean-field model of Sherrington and Kirkpatrick. A qualitative good agreement is foundKeywords
This publication has 15 references indexed in Scilit:
- Spin glass properties of (Ti1−xVx)2O3Journal of Applied Physics, 1981
- Low-temperature excitations in spin glasses: evidence for a T3/2behaviourJournal of Physics F: Metal Physics, 1981
- A Simple hypothesis for the spin glass phase of the pnfinite-ranged SK modelJournal de Physique Lettres, 1980
- Evidence for Mn clustering in dilute CuMn alloys from high-field (40 T) magnetization curves at 4.2 KSolid State Communications, 1979
- Low-dc-field susceptibility ofspin glassPhysical Review B, 1979
- Stability of the Sherrington-Kirkpatrick solution of a spin glass modelJournal of Physics A: General Physics, 1978
- Phenomenological Theory of Spin-Glasses and Some Rigorous ResultsProgress of Theoretical Physics, 1977
- Gold-iron spin glasses in low DC fields. I. Susceptibility and thermoremanenceJournal of Physics F: Metal Physics, 1977
- Magnetic behavior of dilute Cu(Mn) alloys at very low temperaturesJournal of Low Temperature Physics, 1971
- Specific heat and magnetization in dilute magnetic alloysJournal of Low Temperature Physics, 1969