Transport properties and phase diagram of the disordered lattice vibration model

Details Transport properties and phase diagram of the disordered lattice vibration model Transport properties and phase diagram of the disordered lattice vibration model

1999-11-25

arxiv.org/abs/cond-mat/9911409v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

LaTeX, 29 pages, 10 figures

Scientific paper

We study the transport and localization properties of scalar vibrations on a lattice with random bond strength by means of the transfer matrix method. This model has been recently suggested as a means to investigate the vibrations and heat conduction properties of structural glasses. In three dimensions we find a very rich phase diagram. The delocalization transition is split, so that between the localized and diffusive phases which have been identified in the Anderson problem, we observe a phase with anomalous, sub-exponential localization. For low frequencies, we find a strongly conducting phase with ballistic and super-diffusive transport, reflecting a diverging diffusivity. The last phase generates an anomalous heat conductivity which grows with the system size. These phases are the counterparts of those identified in an earlier study of the normal modes.

Affiliated with

Also associated with

No associations

Rating

Transport properties and phase diagram of the disordered lattice vibration model 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 Transport properties and phase diagram of the disordered lattice vibration model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transport properties and phase diagram of the disordered lattice vibration model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-375