Neutron Scattering Study of the Anisotropic Spin Fluctuation in Sr 2 RuO 4

Abstract

In this paper, we present the results of our unpolarized inelastic neutron scattering experiments on the spin-triplet superconductor Sr₂RuO₄. Our measurements showed that incommensurate spin susceptibilities at q₀ = (0.3 0.3 0) exhibit c-axis anisotropy. This discovery supports the notion that magnetic anisotropy may induce p-wave superconductivity in this material.

Keywords

Spin-triplet superconductor Incommensurate spin fluctuations Spin anisotropy Superconducting mechanism

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