Publication:
Reduced-gap ratio of high-Tc cuprates within the d-wave two-dimensional van hove scenario

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Issued Date

1998

Resource Type

Article

File Type

application/pdf

ISSN

8961107

DOI

10.1023/A:1022645630932

Other identifier(s)

2-s2.0-0032132061

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Journal of Superconductivity. Vol 11, No.4 (1998), p.429-432

Suggested Citation

Pakokthom C., Krunavakarn B., Udomsamuthirun P., Yoksan S. Reduced-gap ratio of high-Tc cuprates within the d-wave two-dimensional van hove scenario. Journal of Superconductivity. Vol 11, No.4 (1998), p.429-432. doi:10.1023/A:1022645630932 Retrieved from: https://hdl.handle.net/20.500.14740/7270

Title

Reduced-gap ratio of high-Tc cuprates within the d-wave two-dimensional van hove scenario

Author(s)

Pakokthom C.
 Krunavakarn B.
 Udomsamuthirun P.
 Yoksan S.

Abstract

The gap-to-Tc ratio (R) of high-temperature superconductors is calculated in the context of d symmetry of the superconducting order parameter and a two-dimensional Van Hove singularity in the density of states, using the BCS theory for weak coupling. Exact numerical calculation and an analytic formula for R are given. The ratios are found to be substantially larger than the BCS weak coupling limit of 3.53. The overall dependence of R on ωD/Tc, where ωD is the cutoff frequency, is given. © 1998 Plenum Publishing Corporation.

Subject(s)

Approximation theory
 Band structure
 Fermi level
 High temperature superconductors
 Integral equations
 Integration
 Photoemission
 Two dimensional
 Waves
 Bismuth compounds
 Electronic density of states
 Mathematical models
 Numerical analysis
 Superconducting transition temperature
 BCS
 D-wave superconductors
 Gap-to-Tc ratio
 Van Hove singularity
 Two-dimensional Van Hove scenario
 Oxide superconductors

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URI

https://hdl.handle.net/20.500.14740/7270

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Scopus: Year 1983-2021

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