Structure-property relationships for. beta. - and. kappa. -phase BEDT-TTF salts and their use in the synthesis of. kappa. -(BEDT-TTF) sub 2 Cu(N(CN) sub 2 )Br

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:6824343

Williams, J M; Kini, A M; Geiser, U; Wang, Hau H; Carlson, K D; Kwok, W K; Vandervoort, K G; Thompson, J E; Stupka, D L ^[1]; Jung, D; Whangbo, M H ^[2]

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1. Argonne National Lab., IL (USA)
2. North Carolina State Univ., Raleigh, NC (USA). Dept. of Chemistry

A new ambient pressure organic superconductor, {kappa}-(ET){sub 2}Cu(N(CN){sub 2})Br, has been discovered with an inductive onset {Tc} = 11.6 {plus minus} 0.1 K (resistive onset = 12.5 {plus minus} 0.1 K). The anion in the new salt consists of a polymeric mixed (halide)(pseudohalide)cuprate(I) species. Because of the large number of metal/halide/pseudohalide substitutions that can be made in this anionic species, it opens up an entirely new conceptual approach to the design of additional conducting and superconducting (with even higher {Tc}'s) cation-radical salts by use of planar polymeric anions. Studies along these lines are currently under way in our laboratory. It is also becoming increasingly clear that in terms of structure (both are layered superconductors) and the physics (both are type II-superconductors with anisotropic coherence lengths, anisotropic H{sub c2}, and in which superconductivity is competing with magnetic ground states, etc.),the organic superconductors are more similar to the high-{Tc} oxide superconductors than to other classes of superconductors. Thus, the prospects for discovering high-{Tc} in organic systems appear very bright

• Research Organization: Argonne National Lab., IL (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6824343
• Report Number(s): CONF-900528-3; ON: DE90017804
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANIONS
BEDT-TTF
BROMINE COMPOUNDS
CHARGED PARTICLES
CHEMICAL PREPARATION
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
IONS
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC SUPERCONDUCTORS
PHASE STUDIES
PHYSICAL PROPERTIES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS