The Crucial Interplay Between Spin, Charge and Lattice in Organic Superconducting Charge Transfer Salts

Even though superconductivity in organic charge transfer salts (CTS) is unconventional since evidence for a d-wave order parameter is seen , lattice effect play a crucial role, because isotope effects have been observed as well as substantial influences of the insulating buffer layers on the material properties. Consequently, models for CTS should not only take strong correlations into account but also consider spin, charge lattice interaction effects together with a-axis coupling arising from the anionic buffer layers. Here, we propose a novel model, where these latter effects are incorporated and various experimental findings consistently explained.