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Full-Text Articles in Physical Sciences and Mathematics
The Effect Of Continuous Stirring On Off-Critical And Critical Samples Of A Phase Separating Binary Liquid Mixture, Nalini Easwar
The Effect Of Continuous Stirring On Off-Critical And Critical Samples Of A Phase Separating Binary Liquid Mixture, Nalini Easwar
Physics: Faculty Publications
The effect of shear on phase separation in a continuously stirred mixture of isobutyric acid and water has been studied. The data for the onset of phase separation in the stirred samples that are as far away as 500 mK from the critical point compare favorably with the theory of Onuki and Takasue and with similar measurements on very off-critical mixtures of 2-6 lutidine plus water reported by Min et al. However, as the composition gets closer to the critical composition significant differences arise. The main feature is that the measured suppression in temperature peaks at an off-critical composition …
Competition Between Superconductivity And A New 20 K Phase In -(Bedt-Ttf)2i3: Specific Heat Measurements, Nathanael A. Fortune, K. Murata, K. Ikeda, T. Takahashi
Competition Between Superconductivity And A New 20 K Phase In -(Bedt-Ttf)2i3: Specific Heat Measurements, Nathanael A. Fortune, K. Murata, K. Ikeda, T. Takahashi
Physics: Faculty Publications
We present here direct calorimetric evidence for a new transition at T*=22.25 K in the metallic state of quasi-2D organic superconductor -(BEDT-TTF)2I3 at ambient pressure, as suggested by our previous measurement of the temperature-dependent Hall coefficient RH(T). The apparent reduction in the effective electronic density of states at T* quantitatively explains for the first time the suppression of Tc from the pressure-stabilized eehigh-Tcee value of 8 K to the ambient-pressure cooled eelow-Tcee value of 1.5 K.