Fluctuation Effects on the Physical Properties of Cd2Re2O7 Near 200 K

  • 24 August 2001
Abstract
Experimental investigation of the resistivity $\rho$, susceptibility $\chi$, specific heat C$_p$, and Hall coefficient R$_H$ of the pyrochlore Cd$_2$Re$_2$O$_7$ reveals a continuous phase transition at 200 K. A subtle structural change, observed by electron and x-ray diffraction, accompanies the phase transition. The observation of scaling behavior relating the investigated quantities suggests that fluctuations play a crucial role in the transition regime. The origin of the fluctuations is discussed.

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