Abstract
The effects of non-magnetic impurities on quasi-one dimensional superconductors are investigated by use of the bosonized hamiltonian which consists of phase variables of charge density wave (CDW) and superconductivity. Applying a renormalisation-group method and a mean-field treatment of the interchain coupling, we calculate the superconducting (SC) transition temperature as a function of the disorder. We find that, contrary to the one-dimensional case, the SC phase is completely destroyed by the impurity pinning of the CDW, only for a finite concentration D c of the impurities.
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