Structural changes in superconducting BEDT-TTF salts.
نویسندگان
چکیده
منابع مشابه
The correlation of lattice phonon frequencies with the superconducting transition temperatures of some (BEDT-TTF) salts
The far-infrared powder absorption spectra, between 10 cm-’ and 350 cm-‘, of seven BEDT-TTF salts that exhibit superconductivity at or near ambient pressure, have been measured as a function of temperature, between 5 K and 300 K. The temperature dependences of the peak frequencies, along with the measured deuterium isotopic frequency shifts, separated the lattice from the internal modes. The fr...
متن کاملMagnetism in BEDT-TTF materials
Strong commensurate antiferromagnetism proximate to superconductivity is found in some members of the κ-(ET) family, while a spin gap (SG) is found in the θ-(ET). Both κand θ-(ET) materials have frustrated triangular lattice structures. We show from calculations of spin-spin correlations within the effective half-filled band triangular lattice proposed for the κ-ET, as well as for the real latt...
متن کاملPolymorphism and Metallic Behavior in BEDT-TTF Radical Salts with Polycyano Anions
Up to five different crystalline radical salts have been prepared with the organic donor BEDT-TTF and three different polynitrile anions. With the polynitrile dianion tcpd 2− (=C[C(CN)2]3 2− ), two closely related radical salts: α'-(ET)4tcpd·THF (1) (THF = tetrahydrofurane) and α'-(ET)4tcpd·H2O (2) have been prepared, depending on the solvent used in the synthesis. With the mono-anion tcnoetOH ...
متن کاملChemo- and enantioselective sulfoxidation of bis(ethylenedithio)-tetrathiafulvalene (BEDT-TTF) into chiral BEDT-TTF-sulfoxide.
Selective sulfoxidation of BEDT-TTF (bis(ethylenedithio)-tetrathiafulvalene) with enantiopure (camphoryl-sulfonyl)oxaziridine derivatives provided the inner monosulfoxide, as demonstrated using single crystal X-ray analysis, with an enantiomeric excess of 44% (up to 74% after recrystallization).
متن کاملK anomaly and its effect on the superconducting and magnetic transition in deuterated k - „ BEDT - TTF
In this paper, we report careful transport and magnetic measurements on single crystals of deuterated k-~ET!2Cu@N~CN!2!#Br. By cooling the sample at different rates, it is found that cooling through 80 K has a dramatic effect on the normal state metal-insulator transition and the superconducting transition temperatures. In-plane resistivity depends strongly on the cooling rate for temperatures ...
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ژورنال
عنوان ژورنال: NIPPON KAGAKU KAISHI
سال: 1986
ISSN: 2185-0925,0369-4577
DOI: 10.1246/nikkashi.1986.490