The Primary Role of Ionic Polarizability in Exotic Superconductivity

• Authors: M. Weger
• Languages of publication: EN

Abstracts

EN

The ionic polarizability of organic metals and of high-T_{c} cuprates is very high while the density of conduction electrons is low. As a result, the ionic polarizability screens out the electronic polarizability for states very close to the Fermi surface. The cut-off is determined by the dispersion of the ionic polarizability. The electron-phonon matrix element is very large for the ionically screened states, and is the cut-off for the electronically screened states. Therefore, the McMillan coupling constant λ_{ph} is very large at very low energies, and has a low energy cut-off. This model accounts for both normal and superconducting state anomalies in organic metals, as well as cuprates.

Keywords

EN

74.70.Kn; 74.72.-v; 72.15.-h; 71.45.Gm

Discipline

• 74.70.Kn: Organic superconductors
• 71.45.Gm: Exchange, correlation, dielectric and magnetic response functions, plasmons

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 4-5
• Pages: 723-733

Dates

published

1995-04

Contributors

author

M. Weger

• Racah Institute of Physics, Hebrew University, Jerusalem, Israel

Identifiers

DOI

10.12693/APhysPolA.87.723