The Isotope Effect Coefficient with Pseudogap and One-band Superconductor

摘要

This research studied the isotope effect coefficient of high temperature superconductors. The model used one-band superconductor which considered the competition of superconducting gap and pseudogap in the below crossover temperature region. The isotope effect coefficient is derived and approximation in simplify form. We find that the isotope effect coefficient is decreased as the critical temperature T_c and the crossover temperature T* ratio T_c/ T increased.