Thermal Conductivity of Organic Superconductor κ-(BEDT-TTF)4 Hg2.89Br8

We measured thermal conductivity of organic superconductor κ–(BEDT–TTF)4Hg2.89Br8 [BEDT-TTF = bis(ethylenedithio)tetrathiafulvalene]. The result of the measurements for, two different samples at low temperature indicates presence of paired states of electrons, caused by unconventional mechanism of anisotropic superconductivity.

(by Y. Okada & J.Takeya)

	Fig.1. Sample dependence of thermal conductivity of κ–(BEDT–TTF)4Hg2.89Br8 at low temperature.
	Fig.2. Thermal conductivity of κ–(BEDT–TTF)4Hg2.89Br8 at low temperature.
	Fig.3. Density of state of isotropic superconductivity and anisotropic superconductivity.