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ESR study of two phases of di(bis(ethylenedithio)tetrathiafulvalene)triiodide ((BEDT-TTF)/sub 2/I/sub 3/)

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
; ; ; ;
The sulfur-based organic metal di(bis(ethylenedithio)tetrathiafulvalene)triiodide (or (BEDT-TTF)/sub 2/I/sub 3/, abbreviated (ET)/sub 2/I/sub 3/) occurs in at least two crystalline phases. One phase (denoted as ..beta..) exhibits ambient-pressure superconductivity, while the second (denoted ..cap alpha..) is characterized by an abrupt decrease in conductivity below 135 K. Electron-spin-resonance data are reported for both phases. The spin susceptibility of the superconducting ..beta.. phase is constant below 100 K as expected for a metal, while that of the ..cap alpha.. phase decreases by nearly 2 orders of magnitude below 136 K. The microwave conductivity of the ..beta.. phase agrees with the published dc conductivity. The superconducting transition temperature, T/sub c/, and its pressure dependence are reported for ..beta..-((ET)/sub 2/I/sub 3/).
Research Organization:
Sandia National Laboratories, Albuquerque, New Mexico 87185
OSTI ID:
5453931
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:5; ISSN PRBMD
Country of Publication:
United States
Language:
English

Similar Records

Superconductivity at ambient pressure in di(bis(ethylenedi- thio)tetrathiafulvalene)triiodide, (BEDT-TTF)/sub 2/I/sub 3/
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Resonance Raman investigations of the symmetric stretching mode of I/sub 3/ /sup -/ anions in. cap alpha. and. beta. phases of di-bis(ethylenedithio)tetrathiafulvalene tri-iodide
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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
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Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
CRYSTAL-PHASE TRANSFORMATIONS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
INFORMATION
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC RESONANCE
MAGNETIC SUSCEPTIBILITY
MEDIUM TEMPERATURE
MICROWAVE RADIATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PRESSURE DEPENDENCE
RADIATIONS
RESONANCE
SUPERCONDUCTIVITY
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE