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From semiconductors to superconductors: a simple model for pseudogaps

P. Nozieres·F. Pistolesi
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Abstract

We consider a two dimensional semiconductor with a local attraction among the carriers. We study the ground state of this system as a function of the semiconductor gap. We find a direct transition from a superconducting to an insulating phase for no doping at a critical value, the single particle excitations being always gapped. For finite doping we find a smooth crossover. We calculate the critical temperature due to both the particle excitations and the Berezinkii-Kosterlitz-Thouless transition.

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P. Nozieres, F. Pistolesi. 1999-02-19. From semiconductors to superconductors: a simple model for pseudogaps. https://doi.org/10.1007/s100510050897

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