Microscopic coexistence of a two-component incommensurate spin density wave with superconductivity in underdoped NaFe0.983Co0.017As
Sangwon Oh, A. M. Mounce, Jeongseop A. Lee, W. P. Halperin, C. L. Zhang, S. Carr, Pengcheng Dai, A. P. Reyes, P. L. Kuhns
DOI 10.1103/PhysRevB.88.134518 · Physical Review B
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Abstract
We have performed 75As and 23Na nuclear magnetic resonance (NMR) measurements on a single crystal of NaFe0.9835Co0.0165As and found microscopic coexistence of superconductivity with a two-component spin density wave (SDW). Using 23Na NMR we measured the spatial distribution of local magnetic fields. The SDW was found to be incommensurate with a major component having magnetic moment (∼0.2μB/Fe) and a smaller component with magnetic moment (∼0.02μB/Fe). Spin lattice relaxation experiments reveal that this coexistence occurs at a microscopic level.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NaFe0.983Co0.017As Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 18 | Pressure not reported | unknown |
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