Quenching of the nonlinear susceptibility at aT=0 spin glass transition
- 20 September 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 71 (12), 1919-1922
- https://doi.org/10.1103/physrevlett.71.1919
Abstract
is a dilute dipolar-coupled Ising magnet with a spin glass transition which can be crossed with temperature T (=0.13 K) or with an effective transverse field Γ(=1 K at T=0). The nonlinear susceptibility contains a diverging component which dominates at T=98 mK, but disappears by 25 mK. At the same time, the onset of spin glass behavior in the dissipative linear susceptibility becomes sharper. We conclude that, contrary to theoretical expectations, quantum transitions can be qualitatively different from thermally driven transitions in real spin glasses.
Keywords
This publication has 26 references indexed in Scilit:
- Random transverse field Ising spin chainsPhysical Review Letters, 1992
- Dipolar ferromagnets and glasses (invited)Journal of Applied Physics, 1991
- From classical to quantum glassPhysical Review Letters, 1991
- Dipolar magnets and glasses: Neutron-scattering, dynamical, and calorimetric studies of randomly distributed Ising spinsPhysical Review B, 1990
- Ising spin glass in a transverse field: Replica-symmetry-breaking solutionPhysical Review Letters, 1990
- Stability analysis of an Ising spin glass with transverse fieldPhysical Review B, 1990
- A perturbation expansion for the Sherrington-Kirkpatrick model with a transverse fieldJournal of Physics C: Solid State Physics, 1987
- Disordered electronic systemsReviews of Modern Physics, 1985
- Replica theory of quantum spin glassesJournal of Physics C: Solid State Physics, 1980
- Theory of a Two-Dimensional Ising Model with Random Impurities. I. ThermodynamicsPhysical Review B, 1968