Neutron Scattering Study of the Anisotropic Spin Fluctuation in Sr₂RuO₄

Article type: Research Article

Authors: Kawano-Furukawa, H.^; | Urata, M. | Nagata, T. | Yoshizawa, H. | Kadowaki, H. | Dai, P.^;

Affiliations: Department of Physics, Ochanomizu University, Tokyo 112-8610, Japan | PRESTO, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan | Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610, Japan | Department of Physics, Ochanomizu University, Tokyo 112-8610, Japan | Neutron Science Laboratory, I.S.S.P., Tokyo University, Ibaraki 319-1106, Japan | Department of Physics, Tokyo Metropolitan University, Tokyo 192-0397, Japan | Department of Physics and Astronomy, The University of Tennessee, Knoxville, TN 37996-6393, USA | Condensed Matter Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6393, USA

Note: [] Corresponding author. Fax: +81-5978-5325. E-mail: [email protected]

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

DOI: 10.1080/10238160412331297818

Journal: Journal of Neutron Research, vol. 13, no. 1-3, pp. 45-48, 2005