Relaxation in spin-glasses far above the transition point

ved ringing frequency is fl = S2 |cos8|, 9 being the angle between n and H Even a small fan-out in the directions of n across the sample causes an appre- ciable loss of coherence

Whereas the second moment of the 1H resonance line is not appreciably sensi- tive to this phase transition, because no large amplitude motions are concerned, the

Conversely if we wait an additional time t~ at the temperature T the system evolves towards a new frozen state characterized by a new T( whose relaxation time t'= r(T() corresponds

temperature, where fluctuation efTects are expected to be small, our results are fully consistent with a low frequency conventional Drude response (with an additional

When an external field is applied to a sample in the normal Hall geometry there is a net alignment of the moments and the asymmetric scattering events combine to produce an

The measured field cooled magnetization Mf., ,.(T) is found stable over our measuring window but does exhibit a slight temperature dependence. 1) and-can be measured

within one set of measurements : conversion of the oriented molecules may come in, if the change in temperature is not fast enough.. It is evident that the most

2014 While the existence of a phase transition at finite Tc is well admitted for Ising spin glasses in 3- dimensions, recent theoretical studies have proposed that Tc