Publications [#167455] of Albert M. Chang

Papers Published
  1. Peng Li, Phillip M. Wu, and A.M. Chang, Can a 1-dimensional Superconducting Nanowire Behave Like a Josephson Junction (2009) .

    Abstract:
    The switching current ($I_s$) from the superconducting to normal state in Aluminum nanowires is studied. In the range 0.3 - 1.4 K, $I_s$ fluctuations first increase and then decrease as the temperature rises. This behavior is consistent with a scenario where the resistive transition is triggered by a single phase slips at low temperature and by multiple consecutive phase slips at higher temperatures. The phase slip process is predominantly thermally-assisted except below 0.4 K, where possible quantum tunneling contributions appear. Our results suggest that ultra-narrow superconducting nanowires can exhibit behaviors similar to under-damped Josephson junctions.