Pressure-temperature phase diagram, inverse isotope effect, and superconductivity in excess of 13 K in. kappa. -(BEDT-TTF) sub 2 Cu(N(CN) sub 2 )Cl, where BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene

Journal Article · Sun Sep 01 00:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.4666· OSTI ID:5203072

Schirber, J E; Overmyer, D L ^[1]; Carlson, K D; Williams, J M; Kini, A M; Wang, H H; Charlier, H A; Love, B J; Watkins, D M; Yaconi, G A ^[2]

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1. Sandia National Laboratories, Albuquerque, New Mexico (USA)
2. Chemistry and Materials Science Divisions, Argonne National Laboratory, Argonne, Illinois (USA)

The pressure-temperature phase diagram of the highest-{ital T}{sub {ital c}} organic superconductor, {kappa}-(BEDT-TTF){sub 2}Cu(N(CN){sub 2})Cl is determined, where BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene. Semiconducting, insulating, metallic, and superconducting regimes are seen at pressures below 1 kbar. Superconductivity at 12.5 K and 0.3 kbar {ital increases} by 0.5--1.5 K upon deuteration of BEDT-TTF, in striking contrast to the normal isotope effect determined previously for {kappa}-(BEDT-TTF){sub 2}Cu(N(CN){sub 2})Br.

• DOE Contract Number: AC04-76DP00789; W-31109-ENG-38
• OSTI ID: 5203072
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:9; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
BCS THEORY
BEDT-TTF
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COPPER CHLORIDES
COPPER COMPOUNDS
COPPER HALIDES
DATA
DEUTERATION
DIAGRAMS
ELECTRIC CONDUCTIVITY
ELECTRICAL EQUIPMENT
ELECTRICAL INSULATORS
ELECTRICAL PROPERTIES
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HIGH PRESSURE
INFORMATION
ISOTOPE EFFECTS
MATERIALS
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC SUPERCONDUCTORS
PHASE DIAGRAMS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
SEMICONDUCTOR MATERIALS
SPECTRAL SHIFT
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE