title: Distribution of supercurrent switching in graphene under the proximity effect.
abstract: We study the stochastic nature of switching current in hysteretic current-voltage characteristics of superconductor-graphene-superconductor junctions. We find that the dispersion of the switching current distribution scales with temperature as σ(I) proportional to T(α(G)) with α(G) as low as 1/3. This observation is in sharp contrast to the known Josephson junction behavior where σ(I) proportional to T(α(J)) with α(J)=2/3. We propose an explanation using a generalized version of Kurkijärvi's theory for the flux stability in rf-SQUID and attribute this anomalous effect to the temperature dependence of the critical current which persists down to low temperatures.
authors.affiliation: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA. uccoskun@gmail.com
authors.forename: U C
authors.initials: UC
authors.lastname: Coskun
authors.forename: M
authors.initials: M
authors.lastname: Brenner
authors.forename: T
authors.initials: T
authors.lastname: Hymel
authors.forename: V
authors.initials: V
authors.lastname: Vakaryuk
authors.forename: A
authors.initials: A
authors.lastname: Levchenko
authors.forename: A
authors.initials: A
authors.lastname: Bezryadin