Polarized-Neutron Scattering Study of the Cooper-Pair Moment in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>Sr</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi>RuO</mi></mrow><mrow><mn>4</mn></mrow></msub></mrow></math></span>

J. A. Duffy; S. M. Hayden; Y. Maeno; Z. Mao; J. Kulda; G. J. McIntyre

doi:10.1103/PhysRevLett.85.5412

Polarized-Neutron Scattering Study of the Cooper-Pair Moment in ${Sr}_{2} {RuO}_{4}$

J. A. Duffy, S. M. Hayden, Y. Maeno, Z. Mao, J. Kulda, and G. J. McIntyre

Phys. Rev. Lett. 85, 5412 – Published 18 December 2000

Abstract

We report a study of the magnetization density in the mixed state of the unconventional superconductor ${Sr}_{2} {RuO}_{4}$ . On entering the superconducting state we find no change in the magnitude or distribution of the induced moment for a magnetic field of 1 T applied within the Ru $O_{2}$ planes. Our results are consistent with a spin-triplet Cooper pairing with spins lying in the basal plane. This is in contrast with similar experiments performed on conventional and high- $T_{c}$ superconductors.

Received 14 August 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.5412

Authors & Affiliations

J. A. Duffy¹, S. M. Hayden¹, Y. Maeno^2,3, Z. Mao^2,3, J. Kulda⁴, and G. J. McIntyre⁴

¹H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, United Kingdom
²Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
³CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan
⁴Institut Laue-Langevin, B.P. 156, 38042 Grenoble Cedex 9, France