engleski

Effect of thermal cycling on primary relaxation in charge density wave systems

We have measured the dielectric response of charge density wave (CDW) system o-TaS3 on both cooling and heating through the glass transition temperature Tg [1]. I addition to the well-known thermal hysteresis in the DC conductivity, we have observed a pronounced hysteresis in the amplitude and in the characteristic relaxation time of the dielectric response above Tg. Both the amplitude and the relaxation time are higher on heating away from than on cooling towards Tg, indicating that the CDW system finds itself in a more corrugated phase space after freezing.

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