A New Look at Low--Temperature Anomalies in Glasses

Details A New Look at Low--Temperature Anomalies in Glasses A New Look at Low--Temperature Anomalies in Glasses

1998-04-14

arxiv.org/abs/cond-mat/9804140v1

Physics

Condensed Matter

Statistical Mechanics

14 pages, LaTeX, 8 figures, to be published in Festkoerperprobleme/ Advances in Solid State Physics, Vol. 38 (1998)

Scientific paper

10.1007/BFb0107634

We review a model--based rather than phenomenological approach to low--temperature anomalies in glasses. Specifically, we present a solvable model inspired by spin--glass theory that exhibits both, a glassy low--temperature phase, and a collection of double-- and single--well configurations in its potential energy landscape. The distribution of parameters characterizing the local potential energy configurations can be computed, and is found to differ from those assumed in the standard tunneling model and its variants. Still, low temperature anomalies characteristic of amorphous materials are reproduced. More importantly perhaps, we obtain a clue to the universality issue. That is, we are able to distinguish between properties which can be expected to be universal and those which cannot. Our theory also predicts the existence, under suitable circumstances of amorphous phases without low--energy tunneling excitations.

Affiliated with

Also associated with

No associations

Rating

A New Look at Low--Temperature Anomalies in 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 A New Look at Low--Temperature Anomalies in Glasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Look at Low--Temperature Anomalies in Glasses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-231954