Spin density wave in the organic conductor (TMTSF)2NO3: Antiferromagnetic critical effects and non-linear electrical transport
Résumé
We have studied the low-temperature behaviour of (TMTSF)2NO3 at ambient pressure by means of magnetic and transport measurements. In particular, the critical behaviour of the electron spin resonance linewidth close to the antiferromagnetic transition was studied. The critical divergence obtained is discussed in the framework of a recent theory and compared with corresponding data for other organic compounds. Furthermore, we report experiments on electric field dependent transport in the SDW state. We discuss the results obtained and compare them with non-linear conduction in the charge-density-wave compounds.