Aravinda M. Kini

Organic Superconductors—New Benchmarks

Recent advances in the design and synthesis of organic synthetic metals have yielded materials that have the highest superconducting transition temperatures (Tc ≈ 13 kelvin) reported for these systems. These materials have crystal structures consisting of alternating layers of organic donor molecules and inorganic anions. Organic superconductors have various electronic and magnetic properties and crystal structures that are similar to those of the inorganic copper oxide superconductors (which have high Tc values); these similarities include highly anisotropic conductivities, critical fields, and short coherence lengths. The largest number of organic superconductors, including those with the highest Tc values, are charge-transfer salts derived from the electron donor molecule BEDT-TTF or ET [bis(ethylenedithio)-tetrathiafulvalene]. The synthesis and crystal structures of these salts are discussed; their electrical, magnetic, and band electronic structure properties and their many similarities to the copper oxide superconductors are treated as well.

Evidence for structural and electronic instabilities at intermediate temperatures in kappa-(BEDT-TTF)2X for X=Cu[N(CN)2]Cl, Cu[N(CN)2]Br and Cu(NCS)2: Implications for the phase diagram of these quasi-two-dimensional organic superconductors

We present high-resolution measurements of the coefficient of thermal expansion

New κ-phase materials, κ-(ET)2Cu[N(CN)2]X.X=Cl, Br and I. The synthesis, structure and superconductivity above 11 K in the Cl (Tc = 12.8 K, 0.3 kbar) and Br(Tc = 11.6 K) salts

\ensuremath{\alpha}(T)=\ensuremath{\partial}\mathrm{ln}l(T)/\ensuremath{\partial}T

LOW-TEMPERATURE PENETRATION DEPTH OF KAPPA -(ET)2CUN(CN)2BR AND KAPPA -(ET)2CU(NCS)2

of the quasi-two-dimensional (quasi-2D) salts

Pressure dependence of the superconducting transition temperature of potassium fullerene, KxC60

\ensuremath{\kappa}\ensuremath{-}(\mathrm{BEDT}\ensuremath{-}\mathrm{TTF}{)}_{2}X

Test for interlayer coherence in a quasi-two-dimensional superconductor.

with

Charge-Transfer Salts Derived from the New Electron-Donor Molecule BEDO-TTF: ESR, Superconductivity and Electrical Properties, and Crystal and Band Electronic Structure

X=\mathrm{Cu}(\mathrm{NCS}{)}_{2},

The assignment of the normal modes of the BEDT-TTF electron-donor molecule using the infrared and Raman spectra of several isotopic analogs

\mathrm{Cu}[\mathrm{N}(\mathrm{CN}{)}_{2}]\mathrm{Br},

Structural, electronic and magnetic properties of the metal squarate tetrahydrate polymers Fe(C4O4)·4H2O and Cu(C4O4)·4H2O

and