New pairing scheme to overhaul BCS theory

Xue-Heng Zheng, D G Walmsley

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In a superconductor pair occupancy probabilities are doubly defined with conflicting values when normal and umklapp scattering coexist with the same destination momentum. To resolve this issue a new pairing scheme is introduced to assert normal–umklapp frustration under such circumstances. Superconductivity then arises solely from residual umklapp scattering to destination momenta not reached by normal scattering. Consequent Tc calculations from first principles for niobium, tantalum, lead and aluminum turn out to be accurate within a few percent. A new perspective is revealed to support Matthias׳ rule. New light is also shed relevant to the future study of metallic hydrogen.
Original languageEnglish
Pages (from-to)56-59
Number of pages4
JournalSolid state communications
Volume192
Early online date09 May 2014
DOIs
Publication statusPublished - Aug 2014

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