Possibility of insulator to superconductor phase transition

作者：B. K. Chakraverty · 发表于：Journal de Physique Lettres · 年份：1979 · DOI：10.1051/jphyslet:0197900400509900 · 被引用次数：128 · 研究领域：High-pressure geophysics and materials、Magnetic and transport properties of perovskites and related materials

A phase diagram is postulated where the ground-state of a strongly coupled electron-phonon system is a bipolaronic insulator beyond a critical coupling strength. This opens up the possibility of phase transition from a superconductor to insulator at T = 0, as the coupling is varied.