AC Calorimetry at CDW and SDW Transitions. (Reannouncement with New AvailabilityInformation)

摘要

We have measured the specific heat at the SDW transition in K-(BEDT-TTF)2CuN(CN)2C1 and the CDW transitions in ZrTe3, blue bronze, and (TMTSF)2ReO4. No anomaly is observed at the SDW transition. For ZrTe3, a small peak, delta c sub p approx. 0.065R, is observed. For blue bronze and (TMTSF)zReO4, the changes in c sub p are 3-4 times their calculated mean-field values, as expected for 1-D systems. For (TMTSF)2ReO4, there is also sample dependent latent heat associated with anion ordering. Organic superconductor, SDW, CDW.