Gandolfo, D.; Tonchev, N.S.; Verbeure, A.; Zagrebnov, V.A. - In: Physica A: Statistical Mechanics and its Applications 227 (1996) 3, pp. 301-313
For the Keldysh-Kopaev and the Mattis-Langer models the complete phase diagram (T,μ) is characterized. The degree of criticality of the electron-hole pairing fluctuation operator is obtained as a function of the degree of doping.
