EMR Measurements of Field-Induced Superconductor λ-(BETS)2FexGa1−xCl4

We have performed high-field Electron Magnetic Resonance (EMR) measurements of λ-(BETS)2FexGa1−xCl4 to clarify the role of π- and d-electrons in the paramagnetic (PM) and field-induced superconducting (FISC) phases. We found that this system has a non-negligible π-d interaction that is very sensitive to the sample cooling rate. The π-d interaction is weaker when the sample is rapidly cooled which might affect its FISC phase. The results of the organic alloy λ-(BETS)2FexGa1−xCl4 (x = 0.6) will be presented in this paper. © 2005 Elsevier Science. All rights reserved