High-frequency dynamics and the spin-glass transition

Creators: Bitko, D.; Menon, N.; Nagel, S. R.; Rosenbaum, T. F.; Aeppli, G.

Abstract

We identify two distinct regimes in the high-frequency response of the insulating, Ising spin-glass, LiHo_(0.167)Y_(0.833)F_4 The asymptotic high-frequency behavior of the imaginary part of the magnetic susceptibility becomes frequency independent as the spin-glass transition is approached: the shortest and the longest measured time scales both contain information about the actual phase transition. We compare our results to corresponding data on supercooled liquids.

Additional Information

© 1996 Europhysics Letters Association. (received 18 September 1995; accepted in final form 11 January 1996) We are indebted to W. Wu for his many contributions to this project. The work at the University of Chicago was supported primarily by the MRSEC Program of the National Science Foundation under Award No. DMR-9400379.

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