Ultrasonic properties and electron-phonon coupling constant in TlSr2(M1-xYx)Cu2O7(M = Ca, Sr) superconductor

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3 Citations (Scopus)

Abstract

Ultrasonic properties of bulk TlSr2(M1-xYx)Cu2O7 (M = Ca, Sr) high temperature superconductors have been measured between 80 and 280 K. Sound velocity measurements show that all samples exhibit an overall stiffening trend with decreasing temperature. The longitudinal sound velocity shows a pronounced slope change and attenuation peak around 200 K. The results were explained in terms of phase transition and distortion of Tl and O atoms associated with local oxygen ordering. The calculated acoustic Debye temperature does not show strong correlation with the transition temperature. The electron-phonon coupling constant was calculated using the weak and strong limit of the BCS theory as well as the van Hove scenario.

Original languageEnglish
Pages (from-to)4923-4933
Number of pages11
JournalInternational Journal of Modern Physics B
Volume16
Issue number32
DOIs
Publication statusPublished - 20 Dec 2002

Fingerprint

Acoustic wave velocity
Superconductor
Phonon
acoustic velocity
Superconducting materials
ultrasonics
Ultrasonics
Electron
Acoustic variables measurement
Debye temperature
BCS theory
stiffening
High temperature superconductors
Electrons
trucks
velocity measurement
high temperature superconductors
Velocity measurement
Superconducting transition temperature
High-temperature Superconductors

Keywords

  • Sound velocity
  • Thallium-based superconductor
  • Ultrasonic attenuation

ASJC Scopus subject areas

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

Cite this

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abstract = "Ultrasonic properties of bulk TlSr2(M1-xYx)Cu2O7 (M = Ca, Sr) high temperature superconductors have been measured between 80 and 280 K. Sound velocity measurements show that all samples exhibit an overall stiffening trend with decreasing temperature. The longitudinal sound velocity shows a pronounced slope change and attenuation peak around 200 K. The results were explained in terms of phase transition and distortion of Tl and O atoms associated with local oxygen ordering. The calculated acoustic Debye temperature does not show strong correlation with the transition temperature. The electron-phonon coupling constant was calculated using the weak and strong limit of the BCS theory as well as the van Hove scenario.",
keywords = "Sound velocity, Thallium-based superconductor, Ultrasonic attenuation",
author = "Hassan, {Z. R.} and {Abd. Shukor}, Roslan and Alwi, {Hasan Adli}",
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T1 - Ultrasonic properties and electron-phonon coupling constant in TlSr2(M1-xYx)Cu2O7(M = Ca, Sr) superconductor

AU - Hassan, Z. R.

AU - Abd. Shukor, Roslan

AU - Alwi, Hasan Adli

PY - 2002/12/20

Y1 - 2002/12/20

N2 - Ultrasonic properties of bulk TlSr2(M1-xYx)Cu2O7 (M = Ca, Sr) high temperature superconductors have been measured between 80 and 280 K. Sound velocity measurements show that all samples exhibit an overall stiffening trend with decreasing temperature. The longitudinal sound velocity shows a pronounced slope change and attenuation peak around 200 K. The results were explained in terms of phase transition and distortion of Tl and O atoms associated with local oxygen ordering. The calculated acoustic Debye temperature does not show strong correlation with the transition temperature. The electron-phonon coupling constant was calculated using the weak and strong limit of the BCS theory as well as the van Hove scenario.

AB - Ultrasonic properties of bulk TlSr2(M1-xYx)Cu2O7 (M = Ca, Sr) high temperature superconductors have been measured between 80 and 280 K. Sound velocity measurements show that all samples exhibit an overall stiffening trend with decreasing temperature. The longitudinal sound velocity shows a pronounced slope change and attenuation peak around 200 K. The results were explained in terms of phase transition and distortion of Tl and O atoms associated with local oxygen ordering. The calculated acoustic Debye temperature does not show strong correlation with the transition temperature. The electron-phonon coupling constant was calculated using the weak and strong limit of the BCS theory as well as the van Hove scenario.

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