Resonance peak in Sr(2)RuO(4): signature of spin triplet pairing

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 t...

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Bibliographic Details
Published inPhysical review letters Vol. 86; no. 26 Pt 1; p. 5978
Main Authors Morr, D K, Trautman, P F, Graf, M J
Format Journal Article
LanguageEnglish
Published United States 25.06.2001
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Summary: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.
ISSN:0031-9007