Spontaneous Formation of a Superconducting and Antiferromagnetic Hybrid State inunder High Pressure
- 15 December 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 103 (25), 257002
- https://doi.org/10.1103/physrevlett.103.257002
Abstract
We report a novel superconducting (SC) and antiferromagnetic (AF) hybrid state in revealed by 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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This publication has 21 references indexed in Scilit:
- Coexistence of Competing Antiferromagnetic and Superconducting Phases in the UnderdopedCompound Using X-ray and Neutron Scattering TechniquesPhysical Review Letters, 2009
- Antiferromagnetism of SrFe2As2 Studied by Single-Crystal 75As-NMRJournal of the Physics Society Japan, 2009
- To What Extent Iron-Pnictide New Superconductors Have Been Clarified: A Progress ReportJournal of the Physics Society Japan, 2009
- Commonalities in phase and modeNature Materials, 2009
- Electronic Phase Separation in the Slightly Underdoped Iron Pnictide SuperconductorPhysical Review Letters, 2009
- Abrupt Emergence of Pressure-Induced Superconductivity of 34 K in SrFe2As2: A Resistivity Study under PressureJournal of the Physics Society Japan, 2009
- Superconductivity up to 29 K in SrFe2As2and BaFe2As2at high pressuresJournal of Physics: Condensed Matter, 2008
- Columnar magnetic structure coupled with orthorhombic distortion in the antiferromagnetic iron arsenidePhysical Review B, 2008
- Superconducting State inby Internal Doping of the Iron Arsenide LayersPhysical Review Letters, 2008
- Superconducting Fe-Based Compounds with and Cs with Transition Temperatures up to 37 KPhysical Review Letters, 2008