Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1810914 | Physica B: Condensed Matter | 2012 | 4 Pages |
Abstract
We study theoretically formation of two-dimensional (2D) charge density wave (CDW) in a system of conducting chains at the surface of an insulator due to interaction of quasi-1D surface electrons with phonons. We show that the unscreened long-range Coloumb interaction between the charges induced by fluctuations of the CDW phase stabilizes the finite order parameter value at finite temperatures, and thus the long-range order (LRO) exists. In the case of screened Coloumb interaction the phase fluctuations suppress the phase transition, but decay of the order parameter is rather slow, it obeys a power-law ãÎâ(r)Î(0)ãârâγ with small exponent γ.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
P.P. Aseev, S.N. Artemenko,