Collapse of the waiting time effect in a spin glass

Article

关键词: CRITICAL EXPONENTS;    AMORPHOUS ORDER;    DYNAMICS;    RELAXATION;    DENSITY;    GROWTH;   

DOI  :  10.1103/PhysRevB.101.174409

来源: SCIE

【 摘 要 】

Waiting time measurements are reported for a bulk polycrystalline sample of the spin glass Cu0.95Mn0.05. We observe a suppression of aging as the glass temperature is approached from below. These results are interpreted in terms of a spin-glass correlation length approaching and reaching crystallite sizes. They provide a direct experimental connection between the correlation length scale and relaxation times in the spin-glass state. In particular, these measurements track the value of the dynamic critical exponent as the system transitions from the critical temperature regime to its low-temperature, quasistatic nonequilibrium phase.

【 授权许可】

Free