English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate a simple explanation for the high maximum gap to $T_{c}$ ratiofound experimentally in high $T_{c}$ compounds. We ascribe this observation tothe lowering of $T_{c}$ by boson scattering of electrons between parts of theFermi surface with opposite sign for the order parameter. We study the simplestpossible model within this picture. Our quantitative results show that we canaccount for experiment for a rather small value of the coupling constant, allthe other ingredients of our model being already known to exist in thesecompounds. A striking implication of this theory is the fairly high value ofthe critical temperature in the absence of boson scattering.Comment: 5 pages, revtex, 2 figure

A simple theory for high Δ/ T c ratio in d-wave superconductors