2007/09/30 by Sergei Khlebnikov, S. Khlebnikov · 2 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.77.014505
published as Phys. Rev. B 77, 014505 (2008) · 14 pages, 1 figure; published in Phys. Rev. B
openalex publication_date 2008/01/14 · arxiv created 2008/03/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider tunneling of vortices across a superconducting film that is both narrow and short (and connected to bulk superconducting leads at the ends). We find that in the superconducting state the resistance, at low values of the temperature (T) and current, does not follow the power-law dependence on T characteristic of longer samples but is exponential in 1∕T. The coefficient of 1∕T in the exponent depends on the length or, equivalently, the total normal-state resistance of the sample. These conclusions persist in the one-dimensional limit, which is similar to the problem of quantum phase slips in an ultranarrow short wire.