Publication:
Gap-to-Tc ratio as a function of the Fermi level shift

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Issued Date

1997

Resource Type

Article

File Type

application/pdf

ISSN

8961107

DOI

10.1007/BF02763941

Other identifier(s)

2-s2.0-0031071091

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Journal of Superconductivity. Vol 10, No.1 (1997), p.1-2

Suggested Citation

Ratanaburi S., Udomsamuthirun P., Saentalard N., Yoksan S. Gap-to-Tc ratio as a function of the Fermi level shift. Journal of Superconductivity. Vol 10, No.1 (1997), p.1-2. doi:10.1007/BF02763941 Retrieved from: https://hdl.handle.net/20.500.14740/7351

Title

Gap-to-Tc ratio as a function of the Fermi level shift

Author(s)

Ratanaburi S.
 Udomsamuthirun P.
 Saentalard N.
 Yoksan S.

Abstract

Within the framework of the BCS theory, the gap-to-Tc ratio R = 2Δ0/kTc is evaluated numerically (Δ0 is the energy gap at T=0 and Tc is the critical temperature) for a superconductor with a van Hove singularity (vHs) in the density of states as a function of the shifts (δ) of the Fermi level with respect to the vHs. It is found that R varies asymmetrically with δ and that the variations are strong near δ = 0. Our numerical calculation shows that the largest R's occur at certain values of δ ≠ 0. © 1997 Plenum Publishing Corporation.

Subject(s)

Electronic density of states
 Energy gap
 Fermi level
 Numerical methods
 Gap ratio
 Van Hove singularity (vHs)
 High temperature superconductors

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URI

https://hdl.handle.net/20.500.14740/7351

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Scopus: Year 1983-2021

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