Orbital fluctuation-induced triplet superconductivity: Mechanism of superconductivity in Sr2RuO4

Authors
Takimoto, T
Citation
T. Takimoto, Orbital fluctuation-induced triplet superconductivity: Mechanism of superconductivity in Sr2RuO4, PHYS REV B, 62(22), 2000, pp. R14641-R14644
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
22
Year of publication
2000
Pages
R14641 - R14644
Database
ISI
SICI code
0163-1829(200012)62:22<R14641:OFTSMO>2.0.ZU;2-0
Abstract
The mechanism of superconductivity in Sr2RuO4 is studied using a degenerate Hubbard model within the weak coupling theory. When the system approaches the orbital instability which is realized due to increasing the on-site Cou lomb interaction between the electrons in the different orbitals, it is sho wn that the triplet superconductivity appears. This superconducting mechani sm is only available in orbitally degenerate systems with multiple Fermi su rfaces.