Magnetic response of odd-frequency s-wave Cooper pairs in a superfluid proximity system
S. Higashitani, H. Takeuchi, S. Matsuo, Y. Nagato, and K. Nagai
Accepted
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.