Effects of disorder on high-temperature superconductors
Tai Kai Ng
DOI 10.1103/PhysRevB.45.10830 · Physical Review B
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Abstract
The effect of disorder on high-temperature superconductors is studied using a phenomenologically modified scaling theory for disordered interacting fermions. It is found that the effect of disorder on high-temperature superconductors is very different from the effect on a normal metal because of the ‘‘marginal’’-Fermi-liquid effect. In particular, we found that the system always scales toward strong disorder if the ‘‘marginal’’ effect is strong enough. Correspondingly, the magnetic susceptibility goes to zero.
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