Depth-resolved characterization of Meissner screening breakdown in surface treated niobium oleh Edward Thoeng, Md Asaduzzaman, Philipp Kolb, Ryan M. L. McFadden, Gerald D. Morris, John O. Ticknor, Sarah R. Dunsiger, Victoria L. Karner, Derek Fujimoto, Tobias Junginger, Robert F. Kiefl, W. Andrew MacFarlane, Ruohong Li, Suresh Saminathan, Robert E. Laxdal