Electronic Transitions in the Critical Region

Consider the physical properties of liquid selenium at a temperature of 1450 °C and a slightly supercritical pressure of 400 bar. The reduced temperature at this point is (T — T)/Tc 10 . Magnetic data tell us that 

With further heating toward the critical point, the conductivity (Fig. 5.7) drops precipitously while the NMR resonance shift (Fig. 5.11) decreases only modestly. A reduction in shift in the vapor is to be 

Ashcroft, N. W., and Mermin, N. P. 1976. Solid State Physics. Philadelphia Saunders. 

Fischer, R., and Schmutzler, R. W. 1979. In The Physics of Selenium and Tellurium, ed. E. Gerlach and P. Grosse. Springer Ser. in Solid State Sciences 13 225. 

Hoshino, H., Schmutzler, R. W., and Hensel, F. 1976a. Ber. Bunsenges. Phys. Chem. 80 27. 

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