Physics – Condensed Matter – Superconductivity
Scientific paper
2003-10-14
Physics
Condensed Matter
Superconductivity
4 pages, 4 figures
Scientific paper
Motivated by the recent discovery of superconductivity in layered Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O compound, we investigate theoretically the spin dynamics in the superconducting state with three possible $p_{x}+ip_{y}$-, $d+id'$-, and $f$-wave pairing symmetries in two-dimensional triangular lattices. We find that a spin resonance peak, which is elaborated to have a close relevance to the relative phase of the gap function and the geometry of the Fermi surface, appears in both in-plane and out-of-plane components of the spin susceptibility $\chi$ for the spin-singlet $d+id'$-wave pairing, while only in the out-of-plane(in-plane) component of $\chi$ for the spin-triplet $p_{x}+ip_{y}$-wave ($f$-wave) pairing. Because the pairing symmetry in this compound is still hotly debated at present, this distinct feature may be used to probe or determine it unambiguously with future neutron scattering experiments.
Li Jian-Xin
Wang Zheng-Dong
No associations
LandOfFree
Spin resonance peak in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O superconductors: A probe of the pairing symmetry 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 Spin resonance peak in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O superconductors: A probe of the pairing symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin resonance peak in Na$_{x}$CoO$_{2}\cdot y$H$_{2}$O superconductors: A probe of the pairing symmetry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-428247