A new type of collective excitation in two condensate cuprates

P. V. Shevchenko*, O. P. Sushkov

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We consider the implications of the two-pocket Fermi surface for macroscopic quantum phenomena in cuprates. Superconductivity in this system can be described in terms of two coupled condensates. It results in a collective excitation corresponding to the relative phase oscillation - a phason. The energy of the phason is smaller than the maximum gap on the Fermi surface. We discuss the possibility of searching for this collective excitation in the dynamic resistance of a superconducting interference device (SQUID).

Original languageEnglish
Pages (from-to)1190-1192
Number of pages3
JournalSuperconductor Science and Technology
Issue number10
Publication statusPublished - Oct 1998
Externally publishedYes


Dive into the research topics of 'A new type of collective excitation in two condensate cuprates'. Together they form a unique fingerprint.

Cite this