ANOMALOUS BEHAVIOR AT A SUPERCONDUCTING QUANTUM CRITICAL-POINT

Motivated by pressure experiments on UBe13 and Tl2Ba2CaCu2O8, we discu ss low-temperature effects of the pairing interaction at a superconduc ting quantum critical point in a clean system. We point our that measu rements at this quantum critical point can provide a diagnostic tool t o mark out non-BCS mechanisms of superconductivity.