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Magnetic response of odd-frequency s-wave Cooper pairs in a superfluid proximity system
S Higashitani1, H Takeuchi, S Matsuo
1Graduate School of Integrated Arts and Sciences, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima 739-8521, Japan.
Abstract:
We investigate the magnetic response of a dirty-normal-Fermi-liquid-spin-triplet-superfluid proximity system consisting of liquid 3He and aerogel. In contrast to bulk superfluids, Pauli spin susceptibility in the proximity system exceeds its normal-state value locally around the interface. This enhanced Pauli paramagnetism originates from odd-frequency s-wave pairing arising due to spatial inhomogeneity. A characteristic observable signature of the paramagnetic effect can be found in the spin susceptibility temperature dependence.
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