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 〈 Δ(r)Δ(0)〉∝r- γ with small exponent γ.
| Original language | English |
|---|---|
| Pages (from-to) | 1835-1838 |
| Number of pages | 4 |
| Journal | Physica B: Condensed Matter |
| Volume | 407 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Jun 2012 |
Keywords
- Coulomb interaction
- Surface charge density wave
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Fingerprint Dive into the research topics of 'Stabilization of the surface CDW order parameter by long-range Coulomb interaction'. Together they form a unique fingerprint.
Cite this
Aseev, P. P., & Artemenko, S. N. (2012). Stabilization of the surface CDW order parameter by long-range Coulomb interaction. Physica B: Condensed Matter, 407(11), 1835-1838. https://doi.org/10.1016/j.physb.2012.01.043