High temperature superconductivity and electron-phonon coupling

A. R M Yusoff, W. H. Abd Majid, Roslan Abd. Shukor

Research output: Contribution to journalArticle

Abstract

The electron-phonon coupling in a copper oxide based high temperature superconductor has been estimated by taking the anisotropic crystal structure into account. From the Debye temperature of a superconducting material, information about the role of phonons in its superconducting mechanism can be investigated. The void-free acoustic Debye temperature, ΘD, of various cuprate high temperature superconductors estimated using the acoustic technique was found to be between 250 and 500 K. The electron-phonon coupling constant was estimated from the transition temperature Tc using the standard BCS theory and also the 2D van Hove scenario with related characteristic temperature. The van Hove scenario seems to explain high temperature superconductivity in the cuprates better than the standard three-dimensional BCS model.

Original languageEnglish
Pages (from-to)912-915
Number of pages4
JournalSuperconductor Science and Technology
Volume18
Issue number6
DOIs
Publication statusPublished - 1 Jun 2005

Fingerprint

Debye temperature
High temperature superconductors
Superconductivity
trucks
high temperature superconductors
cuprates
superconductivity
Acoustics
specific heat
BCS theory
acoustics
Copper oxides
Electrons
copper oxides
Phonons
Superconducting materials
Superconducting transition temperature
voids
phonons
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

High temperature superconductivity and electron-phonon coupling. / Yusoff, A. R M; Abd Majid, W. H.; Abd. Shukor, Roslan.

In: Superconductor Science and Technology, Vol. 18, No. 6, 01.06.2005, p. 912-915.

Research output: Contribution to journalArticle

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