Microscopic coexistence of superconductivity and charge order in the organic superconductor β′′−(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2
Y. Ihara, K. Moribe, S. Fukuoka, A. Kawamoto
DOI 10.1103/PhysRevB.100.060505 · Physical Review B
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Abstract
An electron paramagnetic resonance study for an organic superconductor β′′−(BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2 reveals that superconductivity coexists uniformly with the charge ordered state in one material. In the charge ordered state, the interplane spin exchange is gapped, while the in-plane conductivity is not significantly modified. This anisotropic behavior is explained by an exotic charge ordered state, in which molecular-site-selective carrier localization coexists with conducting carriers on other molecules. The relationship between superconductivity and this conductive charge ordered state is investigated.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| (BEDT-TTF)4[(H3O)Ga(C2O4)3]·C6H5NO2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7 | Pressure not reported | unknown |
| MgB2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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