Abstract
Susceptibility data on an amorphous GdAl spin-glass show an irreversibility onset line t=-A H2φ - and a susceptibility crossover line t=+A H2φ++ (t is reduced temperature; H is field). The exponents φ are both close to 3, and the amplitudes A differ only by a factor of 2. In contrast to earlier explanations of the irreversibility in terms of a de Almeida-Thouless mean-field instability, here both crossovers are explained in terms of a non-mean-field scaling theory.
Original language | English (US) |
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Pages (from-to) | 1704-1707 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 51 |
Issue number | 18 |
DOIs | |
State | Published - 1983 |
ASJC Scopus subject areas
- Physics and Astronomy(all)