Dr. Adrian Del Maestro
DEPARTMENT OF PHYSICS AND ASTRONOMY
UNIVERSITY OF BRITISH COLUMBIA

 

Infinite randomness at the superconductor-metal transition

The influence of quenched disorder on the superconductor-metal transition, as described by a theory of overdamped Cooper pairs which repel each other is considered. The self-consistent pairing eigenmodes of a quasi-one dimensional wire are determined numerically at zero temperature. The results strongly support the recent proposal by Hoyos et al. (Phys. Rev. Lett. 99, 230601 (2007)) that the transition is characterized by the same infinite randomness fixed point describing the onset of ferromagnetism in the random quantum Ising chain in a transverse field.