title: Resonance peak in Sr(2)RuO(4): signature of spin triplet pairing.
abstract: We study the dynamical spin susceptibility, chi(q,omega), in the normal and superconducting states of Sr(2)RuO(4). In the normal state, we find a peak in the vicinity of Q(i) approximately (0.72 pi,0.72 pi) in agreement with recent inelastic neutron scattering experiments. We predict that for spin triplet pairing in the superconducting state a resonance peak appears in the out-of-plane component of chi, but is absent in the in-plane component. In contrast, no resonance peak is expected for spin singlet pairing.
authors: Theoretical Division, MS B262, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors: D K
authors: DK
authors: Morr
authors: P F
authors: PF
authors: Trautman
authors: M J
authors: MJ
authors: Graf