Superconducting Quantum Critical Point
R. Ramazashvili, P. Coleman
DOI 10.1103/PhysRevLett.79.3752 · Physical Review Letters
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Abstract
We study the properties of a quantum critical point which develops in a BCS superconductor when pair breaking suppresses the transition temperature to zero. The pair fluctuations are characterized by a dynamical critical exponent z=2. Except for very low temperatures, anomalous contribution to the conductivity is proportional to T in three dimensions, but to 1/T in two dimensions. At lowest temperatures, the conductivity correction varies as T1/4 in three dimensions, and as ln(1/T) in two.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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