Magnetic-Field Induced Crossover of Superconducting Percolation Regimes in the Layered Organic Mott System κ−(BEDT−TTF)2Cu[N(CN)2]Cl
Jens Müller, Jens Brandenburg, John A. Schlueter
DOI 10.1103/PhysRevLett.102.047004 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Fluctuation spectroscopy is used to investigate the organic bandwidth-controlled Mott system κ−(BEDT−TTF)2Cu[N(CN)2]Cl. We find evidence for percolative-type superconductivity in the spatially inhomogeneous coexistence region of antiferromagnetic insulating and superconducting states. When the superconducting transition is driven by a magnetic field, percolation seems to be dominated by instable superconducting clusters upon approaching Tc(B) from above, before a “classical” type of percolation is resumed at low fields, dominated by the fractional change of superconducting clusters. The 1/f noise is resolved into Lorentzian spectra in the crossover region, where the action of an individual fluctuator is enhanced, pointing to a mesoscopic phase separation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BEDT-TTF)2Cu[N(CN)2]Cl Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | 0.022 GPa | midpoint |
Similar papers
Effects of inhomogeneity on the interlayer magnetoresistance in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.95F. Zuo et al.
Source status unknown — claims are unverified
Electron Localization near the Mott Transition in the Organic Superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.94K. Sano et al.
Source status unknown — claims are unverified
Mott transition and superconductivity in the strongly correlated organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.94T. Sasaki et al.
Source status unknown — claims are unverified
Competition between magnetism and superconductivity in the organic metal κ−[BEDT−TTF]2Cu[N(CN)2]Br
similarity 0.94David Fournier et al.
Source status unknown — claims are unverified
Magnetic-field-induced superconductor-insulator-metal transition in an organic conductor: An infrared magneto-optical imaging spectroscopic study
similarity 0.93Tatsuhiko Nishi et al.
Source status unknown — claims are unverified
In-plane Hall-effect anisotropy in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.93M. A. Tanatar et al.
Source status unknown — claims are unverified