Disequilibration of the pinned charge-density-wave state by slight changes in temperature

By slowly oscillating the temperature $T$ through successively smaller cycles we have constructed a state of the pinned charge-density wave in Ta${\mathrm{S}}_3$ which is found to be free of relaxation for 8 h. We demonstrate the extreme sensitivity of this state to slight changes in $T$. Other properties of the hysteresis in the resistance-versus-temperature plane are described.