2 papers
cond-mat.supr-con2004
Umklapp scattering of pairs in BCS superconductivity theory
X. H. Zheng, D. G. Walmsley
The BCS theory of superconductivity is extended to recognize pairing of electrons by both normal and umklapp scattering. Application of the variational approach shows that coexiste…
cond-mat.supr-con2003
Umklapp scattering and electron pairing cutoff in BCS superconductors
X. H. Zheng, D. G. Walmsley
In a superconductor electrons form pairs for which the end states of normal and umklapp scattering may overlap. This cuts electron pairing off at a phonon frequency, , low com…