Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition

Details Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition

2005-01-27

arxiv.org/abs/cond-mat/0501654v2

Phys. Rev. B. 71, 224512 (2005)

Physics

Condensed Matter

Superconductivity

9 pages, no figures, 31 references; 1 new figure and minor editing of the text

Scientific paper

10.1103/PhysRevB.71.224512

We study the mean-field theory of charge-density wave (CDW) order in a layered system, including the effect of the long-range Coulomb interaction and of screening by uncondensed electrons. We particularly focus on the conditions necessary for an ``extraordinary'' transition, in which the surface orders at a higher temperature, and is more likely to be commensurate, than the bulk. We interpret recent experiments on NaCCOC as indicating the presence of commensurate CDW at the surface that is not present in the bulk. More generally, we show that poor screening of the Coulomb interaction tends to stabilize incommensurate order, possibly explaining why the CDW order in LSCO and NbSe2 remains incommensurate to T -> 0, despite the small magnitude of the incommensurability.

Affiliated with

Also associated with

No associations

Rating

Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition 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 Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface pinning of fluctuating charge order: an "extraordinary" surface phase transition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-430924