Correlated random fields in dielectric and spin glasses

Details Correlated random fields in dielectric and spin glasses Correlated random fields in dielectric and spin glasses

2009-10-05

arxiv.org/abs/0910.0893v2

EPL, 88 (2009) 66002

Physics

Condensed Matter

Disordered Systems and Neural Networks

minor modifications, final version

Scientific paper

10.1209/0295-5075/88/66002

Both orientational glasses and dipolar glasses possess an intrinsic random field, coming from the volume difference between impurity and host ions. We show this suppresses the glass transition, causing instead a crossover to the low $T$ phase. Moreover the random field is correlated with the inter-impurity interactions, and has a broad distribution. This leads to a peculiar variant of the Imry-Ma mechanism, with 'domains' of impurities oriented by a few frozen pairs. These domains are small: predictions of domain size are given for specific systems, and their possible experimental verification is outlined. In magnetic glasses in zero field the glass transition survives, because the random fields are disallowed by time-reversal symmetry; applying a magnetic field then generates random fields, and suppresses the spin glass transition.

Affiliated with

Also associated with

No associations

Rating

Correlated random fields in dielectric and spin glasses does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Correlated random fields in dielectric and spin glasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Correlated random fields in dielectric and spin glasses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-357105