Abstract
We show that the hole concentration dependence of T c in the high-T c superconductors of the type and can be understood within a model electron-boson hole liquid which possesses a linear sound mode like the one in liquid-4He. The electronic specific heat follows a T 3-law near T = 0 in addition to the linear term. The metal-insulator transition found in these compounds is proposed to be connected with the vanishing of the sound velocity at small hole concentration. The basic assumptions are confirmed by numerical model calculations. Possible connection with heavy fermion systems is discussed.
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Kallio, A., Xiong, X., Alatalo, M. (1990). Electron-Hole Liquid Model for High T c -Superconductors. In: Avishai, Y. (eds) Recent Progress in Many-Body Theories. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3798-4_6
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DOI: https://doi.org/10.1007/978-1-4615-3798-4_6
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