Superconductivity at 14.2 K in Layered Organics under Extreme Pressure
- 15 March 2003
- journal article
- letter
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 72 (3), 468-471
- https://doi.org/10.1143/jpsj.72.468
Abstract
We demonstrate that an organic Mott insulator, β'-(BEDT-TTF) 2 ICl 2 , is metallized by application of extremely high pressure by means of the cubic anvil press. When the metallic state is stabilized, superconductivity with the highest transition-temperature ( T c ) among the organic systems appears. The lower limit of the pressure at which the superconducting transition manifests itself is approximately 7.0 GPa and T c reaches a maximum value, 14.2 K (onset), at 8.2 GPa. The pressure-temperature phase diagram is constructed and discussed in terms of the comparison with those of other organic systems.Keywords
This publication has 24 references indexed in Scilit:
- Residual resistivity of the organic superconductor, κ-(BEDT-TTF)2Cu(NCS)2 under extreme pressureSynthetic Metals, 1999
- Magnetic properties of (BEDT-TTF)2X with localized spinsSynthetic Metals, 1997
- Recent progress in NMR studies on organic conductorsHyperfine Interactions, 1997
- A change of the superstructure and an associated rise of the superconducting critical temperature in the organic superconductor β-(BEDT-FFT)2I3Solid State Communications, 1989
- Electrical and magnetic properties of organic semiconductors, (BEDT-TTF)2X (X = IBr2, IBrCl, and ICl2)Synthetic Metals, 1987
- New cation-anion interaction motifs, electronic band structure, and electrical behavior in .beta.-(ET)2X salts [ET = bis(ethylenedithio)tetrathiafulvalene; X = dichloroiodide, chlorobromoiodide]Journal of the American Chemical Society, 1986
- Ambient-pressure superconductivity at the highest temperature (5 K) observed in an organic system: .beta.-(BEDT-TTF)2AuI2Inorganic Chemistry, 1985
- Ambient-pressure superconductivity at 8 K in the organic conductor β-(BEDT-TTF)2I3Solid State Communications, 1985
- Superconductivity with the Onset at 8 K in the Organic Conductor β-(BEDT-TTF)2I3under PressureJournal of the Physics Society Japan, 1985
- Ambient-pressure superconductivity at 2.7 K and higher temperatures in derivatives of (BEDT-TTF)2IBr2: synthesis, structure, and detection of superconductivityInorganic Chemistry, 1984