Superconductor–insulator transition in nanowires and nanowire arrays

作者：J. E. Mooij, Gerd Schön, Alexander Shnirman, T. Fuse, C. J. P. M. Harmans, Hannes Rotzinger, A. H. Verbruggen · 发表于：New Journal of Physics · 年份：2015 · DOI：10.1088/1367-2630/17/3/033006 · 被引用次数：43 · 研究领域：Physics of Superconductivity and Magnetism、Quantum and electron transport phenomena、Iron-based superconductors research

Superconducting nanowires are the dual elements to Josephson junctions, with quantum phase-slip (QPS) processes replacing the tunneling of Cooper pairs. When the QPS amplitude E S is much smaller than the inductive energy E L , the nanowire responds as a superconducting inductor. When the inductive energy is small, the response is capacitive. The crossover at low temperatures as a function of E S / E L is discussed and compared with earlier experimental results. For one-dimensional and two-dimensional arrays of nanowires quantum phase transitions are expected as a function of E S / E L . They can be tuned by a homogeneous magnetic frustration.