Competition between superconductivity and a new 20 K phase in β-(BEDT-TTF)2I3: Specific heat measurements
N. A. Fortune, K. Murata, K. Ikeda, T. Takahashi
DOI 10.1103/PhysRevLett.68.2933 · 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
We present here direct calorimetric evidence for a new transition at T*=22.25 K in the metallic state of quasi-2D organic superconductor β-(BEDT-TTF)2I3 at ambient pressure, as suggested by our previous measurement of the temperature-dependent Hall coefficient RH(T). The apparent reduction in the effective electronic density of states at T* quantitatively explains for the first time the suppression of Tc from the pressure-stabilized ‘‘high-Tc’’ value of 8 K to the ambient-pressure cooled ‘‘low-Tc’’ value of 1.5 K.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| β-(BEDT-TTF)2I3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.5 | Pressure unresolved | unknown |
| β-(BEDT-TTF)2I3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8 | Pressure not reported | unknown |
Similar papers
Superconductivity Mediated by Charge Fluctuations in Layered Molecular Crystals
similarity 0.95Jaime Merino & Ross H. McKenzie
Source status unknown — claims are unverified
Superconductivity in β-di[bis(ethylenedithio)tetrathiafulvalene]-triiodide [β-(BEDT-TTF)2I3] annealed at 104 K
similarity 0.95Kazushi Kanoda et al.
Source status unknown — claims are unverified
Origin of superconductivity in β′−(BEDT−TTF)2ICl2 under high pressure and in β−(BEDT−TTF)2X at atmospheric pressure
similarity 0.94Hiroshi Kontani
Source status unknown — claims are unverified
κ−(BEDT−TTF)2Cu[N(CN)2]Br: A Fully Gapped Strong-Coupling Superconductor
similarity 0.93H. Elsinger et al.
Source status unknown — claims are unverified
Critical fields and mixed-state properties of the layered organic superconductor κ-(BEDT−TTF)2I3
similarity 0.93S. Wanka et al.
Source status unknown — claims are unverified
Specific heat of the organic superconductor κ-(BEDT-TTF)2I3
similarity 0.93J. Wosnitza et al.
Source status unknown — claims are unverified