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Spin Susceptibility of the Topological Superconductor UPt3 from Polarized Neutron Diffraction

Spin Susceptibility of the Topological Superconductor UPt3 from Polarized Neutron Diffraction

Authors :
Gannon, W. J.
Halperin, W. P.
Eskildsen, M. R.
Dai, Pengcheng
Hansen, U. B.
Lefmann, K.
Stunault, A.
Source :
Phys. Rev. B 96, 041111 (2017)
Publication Year :
2017

Abstract

Experiment and theory indicate that UPt3 is a topological superconductor in an odd-parity state, based in part from temperature independence of the NMR Knight shift. However, quasiparticle spin-flip scattering near a surface, where the Knight shift is measured, might be responsible. We use polarized neutron scattering to measure the bulk susceptibility with H||c, finding consistency with the Knight shift but inconsistent with theory for this field orientation. We infer that neither spin susceptibility nor Knight shift are a reliable indication of odd-parity.

Details

Database :
arXiv
Journal :
Phys. Rev. B 96, 041111 (2017)
Publication Type :
Report
Accession number :
edsarx.1705.08098
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.96.041111