Electron-phonon coupling constant of cuprate based high temperature superconductors

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The electron-phonon coupling constant in two-dimensional cuprate high temperature superconductors has been determined by the ultrasonic method. The electron-phonon coupling constant in the Van Hove scenario λVH was found to increase with transition temperature Tc. λVH is in the range of 0.025-0.060 which is 10-100 times smaller than the conventional three-dimensional Bardeen-Cooper-Schrieffer coupling constant. The characteristic Debye temperature θD does not correlate with Tc. These findings show that the interplay between the Debye frequency and electron-phonon coupling in the two-dimensional system and their variations have a combined effect in governing the transition temperature.

Original languageEnglish
Pages (from-to)587-590
Number of pages4
JournalSolid State Communications
Volume142
Issue number10
DOIs
Publication statusPublished - Jun 2007

Fingerprint

High temperature superconductors
high temperature superconductors
cuprates
Superconducting transition temperature
Electrons
Debye temperature
electrons
transition temperature
Ultrasonics
trucks
ultrasonics
specific heat

Keywords

  • A. Cuprate superconductors
  • D. Debye temperature
  • D. Electron-phonon coupling
  • D. Van Hove scenario

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Electron-phonon coupling constant of cuprate based high temperature superconductors. / Abd. Shukor, Roslan.

In: Solid State Communications, Vol. 142, No. 10, 06.2007, p. 587-590.

Research output: Contribution to journalArticle

@article{e3f71a6d3eeb4cf595ba6bde4b2b7312,
title = "Electron-phonon coupling constant of cuprate based high temperature superconductors",
abstract = "The electron-phonon coupling constant in two-dimensional cuprate high temperature superconductors has been determined by the ultrasonic method. The electron-phonon coupling constant in the Van Hove scenario λVH was found to increase with transition temperature Tc. λVH is in the range of 0.025-0.060 which is 10-100 times smaller than the conventional three-dimensional Bardeen-Cooper-Schrieffer coupling constant. The characteristic Debye temperature θD does not correlate with Tc. These findings show that the interplay between the Debye frequency and electron-phonon coupling in the two-dimensional system and their variations have a combined effect in governing the transition temperature.",
keywords = "A. Cuprate superconductors, D. Debye temperature, D. Electron-phonon coupling, D. Van Hove scenario",
author = "{Abd. Shukor}, Roslan",
year = "2007",
month = "6",
doi = "10.1016/j.ssc.2007.04.012",
language = "English",
volume = "142",
pages = "587--590",
journal = "Solid State Communications",
issn = "0038-1098",
publisher = "Elsevier Limited",
number = "10",

}

TY - JOUR

T1 - Electron-phonon coupling constant of cuprate based high temperature superconductors

AU - Abd. Shukor, Roslan

PY - 2007/6

Y1 - 2007/6

N2 - The electron-phonon coupling constant in two-dimensional cuprate high temperature superconductors has been determined by the ultrasonic method. The electron-phonon coupling constant in the Van Hove scenario λVH was found to increase with transition temperature Tc. λVH is in the range of 0.025-0.060 which is 10-100 times smaller than the conventional three-dimensional Bardeen-Cooper-Schrieffer coupling constant. The characteristic Debye temperature θD does not correlate with Tc. These findings show that the interplay between the Debye frequency and electron-phonon coupling in the two-dimensional system and their variations have a combined effect in governing the transition temperature.

AB - The electron-phonon coupling constant in two-dimensional cuprate high temperature superconductors has been determined by the ultrasonic method. The electron-phonon coupling constant in the Van Hove scenario λVH was found to increase with transition temperature Tc. λVH is in the range of 0.025-0.060 which is 10-100 times smaller than the conventional three-dimensional Bardeen-Cooper-Schrieffer coupling constant. The characteristic Debye temperature θD does not correlate with Tc. These findings show that the interplay between the Debye frequency and electron-phonon coupling in the two-dimensional system and their variations have a combined effect in governing the transition temperature.

KW - A. Cuprate superconductors

KW - D. Debye temperature

KW - D. Electron-phonon coupling

KW - D. Van Hove scenario

UR - http://www.scopus.com/inward/record.url?scp=34248152032&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34248152032&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2007.04.012

DO - 10.1016/j.ssc.2007.04.012

M3 - Article

AN - SCOPUS:34248152032

VL - 142

SP - 587

EP - 590

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

IS - 10

ER -