Two-dimensional quantum Griffith singularity in three-dimensional ZrN${}_x$ superconducting films

Zi-Yan Han, Li-Min Yu, Yu-Cheng Cong +3

We report the experimental observation of two-dimensional (2D) quantum Griffiths singularity (QGS) in $\sim$200-nm-thick epitaxial ZrN${}_x$ superconducting films. The films possess…