Physics – Condensed Matter – Superconductivity
Scientific paper
2011-01-24
Physics
Condensed Matter
Superconductivity
7+ pages, 5 figures
Scientific paper
We investigate the combined effect of Hund's and spin-orbit (SO) coupling on superconductivity in multi-orbital systems. Hund's interaction leads to orbital-singlet spin-triplet superconductivity, where the Cooper pair wave function is antisymmetric under the exchange of two orbitals. We identify three d-vectors describing even-parity orbital-singlet spin-triplet pairings among t2g-orbitals, and find that the three d-vectors are mutually orthogonal to each other. SO coupling further assists pair formation, pins the orientation of the d-vector triad, and induces spin-singlet pairings with a relative phase difference of pi/2. In the band basis the pseudospin d-vectors are aligned along the z-axis and correspond to momentum-dependent inter- and intra-band pairings. We discuss quasiparticle dispersion, magnetic response, collective modes, and experimental consequences in light of the superconductor Sr2RuO4.
Kee Hae-Young
Puetter Christoph M.
No associations
LandOfFree
Identifying spin-triplet pairing in spin-orbit coupled multi-band superconductors: application to Sr2RuO4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Identifying spin-triplet pairing in spin-orbit coupled multi-band superconductors: application to Sr2RuO4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Identifying spin-triplet pairing in spin-orbit coupled multi-band superconductors: application to Sr2RuO4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-540876