Nonlinear current-voltage characteristics due to quantum tunneling of phase slips in superconducting Nb nanowire networks

作者：Trezza M^*; Cirillo C; Sabatino P; Carapella G; Prischepa S L; Attanasio C

来源：Applied Physics Letters, 2013, 103(25): 252601.

DOI：10.1063/1.4851240

We report on the transport properties of an array of N similar to 30 interconnected Nb nanowires, grown by sputtering on robust porous Si substrates. The analyzed system exhibits a broad resistive transition in zero magnetic field, H, and highly nonlinear V(I) characteristics as a function of H, which can be both consistently described by quantum tunneling of phase slips.

• 出版日期2013-12-16