Details

Autor(en) / Beteiligte

• Gannon, W J
• Halperin, W P
• Eskildsen, M R
• Dai, Pengcheng
• Hansen, U B
• Lefmann, K
• Stunault, A

Titel

Spin susceptibility of the topological superconductor UPt3 from polarized neutron diffraction

Ist Teil von

• Physical review. B, 2017-07, Vol.96 (4)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2017

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• Experiment and theory indicate that UPt3 is a topological superconductor in an odd-parity state, based in part from the 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 inconsistency with theory for this field orientation. We infer that neither spin susceptibility nor a Knight shift are a reliable indication of odd parity.