Effect of changes in. cap alpha. /sup 2/(. cap omega. )F(. cap omega. ) on the zero-temperature energy gap of a superconductor

Journal Article · Sun Jun 01 00:00:00 EDT 1980 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.21.5048· OSTI ID:5362908

Mitrovic, B; Leavens, C R; Carbotte, J P

Accurate numerical calculations of the functional derivatives partial..delta../sub 0//partial..cap alpha../sup 2/(..cap omega..)F(..cap omega..) and partial(2..delta../sub 0//k/sub B/T/sub c/)/partial..cap alpha../sup 2/(..cap omega..)F(..cap omega..) for several isotropic or ''dirty'' superconductors are presented as a function of phonon frequency ..cap omega... The universal shape of these functions should prove useful in correlating changes in the zero-temperature gap edge ..delta../sub 0/ and the ratio 2..delta../sub 0//k/sub B/T/sub c/ (T/sub c/ is the transition temperature) with small changes in the electron-phonon spectral function ..cap alpha../sup 2/(..cap omega..)F(..cap omega..).

• Research Organization: Department of Physics, McMaster University, Hamilton, Ontario L8S 4M1, Canada
• OSTI ID: 5362908
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 21:11; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY GAP
GORKOV-ELIASHBERG THEORY
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE