Anisotropic thermopower of the organic superconductor. kappa. -(BEDT-TTF) sub 2 Cu(N(CN) sub 2 )Br
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Department of Physics and Material Research Laboratory, University of Illinois, Urbana, Illinois (USA)
- Chemistry and Materials Science Divisions, Argonne National Laboratory, Argonne, Illinois (USA)
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina (USA)
- Department of Physics, Princeton University, Princeton, New Jersey (USA) Exxon Research and Engineering Company, Annandale, New Jersey (USA)
The thermopower of the organic superconductor {kappa}-(BEDT-TTF){sub 2}Cu(N(CN){sub 2})Br single crystals has been measured in two crystallographic directions {bold a} and {bold c} within the most conducting organic donor molecule plane. (Here BEDT-TTF represents bis(ethylenethio)-tetrathiafulvalene.) While the thermopower in the {bold a} direction is positive, the thermopower in the {bold c} direction is negative. The drastic anisotropy in thermopower reveals that the carriers in the {bold a} direction are holelike, whereas the carriers in the {bold c} direction are electronlike. A calculation based on the tight-binding electronic band structure is able to describe the temperature dependence of the anisotropic thermopower, but with a much reduced band dispersion.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38; FG05-86ER45259
- OSTI ID:
- 5235079
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:13; ISSN PRBMD; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Electron states and Fermi surfaces in the organic superconductor {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br
Superconductivity of {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br: Isotope effect revisited[bis(ethylenedithio)tetrathiafulvalene]
Journal Article
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Sun Sep 01 00:00:00 EDT 1991
· Physical Review, B: Condensed Matter; (United States)
·
OSTI ID:5203072
Electron states and Fermi surfaces in the organic superconductor {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br
Journal Article
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Fri Jan 31 23:00:00 EST 1997
· Physical Review, B: Condensed Matter
·
OSTI ID:489286
Superconductivity of {kappa}-(BEDT-TTF){sub 2}Cu[N(CN){sub 2}]Br: Isotope effect revisited[bis(ethylenedithio)tetrathiafulvalene]
Conference
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Wed Jul 01 00:00:00 EDT 1998
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OSTI ID:20034172
Related Subjects
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BEDT-TTF
CARRIER DENSITY
CRYSTALS
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HETEROCYCLIC COMPOUNDS
HOLES
LEPTONS
MONOCRYSTALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC SUPERCONDUCTORS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMOELECTRIC PROPERTIES
360603* -- Materials-- Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
BEDT-TTF
CARRIER DENSITY
CRYSTALS
ELECTRICAL PROPERTIES
ELECTRONIC STRUCTURE
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HETEROCYCLIC COMPOUNDS
HOLES
LEPTONS
MONOCRYSTALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC SUPERCONDUCTORS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
THERMOELECTRIC PROPERTIES