Single-gap superconductivity in β − B i 2 Pd

This work was supported by the Slovak projects APVV-0036-11, APVV-14-0605, VEGA 2/0149/16, VEGA 1/0409/15, by the ERDF EU grant under contract No. ITMS26220120005 and the COST action MP1201 as well as by the U.S. Steel Kosice. Sample growth was partially supported by the projects No. FIS2014-54498-R (MINECO, Spain) and No. S2013/MIT-2850 Nanofrontmag-CM (Region of Madrid, Spain) and by the Engineering and Physical Sciences Research Council, UK. E.H. acknowledges support from the Grant No. 560-2012 programa de doctorados en el exterior (COLCIENCIAS)