Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.257002
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Funding
- JSPS [21340092, 21340093]
- MEXT
- Grants-in-Aid for Scientific Research [21340092, 21340093] Funding Source: KAKEN
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We report a novel superconducting (SC) and antiferromagnetic (AF) hybrid state in SrFe2As2 revealed by As-75 nuclear magnetic resonance (NMR) experiments on a single crystal under highly hydrostatic pressure up to 7 GPa. The NMR spectra at 5.4 GPa indicate simultaneous development of the SC and AF orders below 30 K. The nuclear spin-lattice relaxation rate in the SC domains shows a substantial residual density of states, suggesting proximity effects due to the spontaneous formation of a nanoscale SC-AF hybrid structure. This entangled behavior is a remarkable example of a self-organized heterogeneous structure in a clean system.
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