Physics and Astronomy, Ames Laboratory
Journal or Book Title
Solid State Communications
We present measurements of the superconducting upper critical field Hc2(T) and the magnetic phase diagram of the superconductor ErNi2B2C made with a scanning tunneling microscope (STM). The magnetic field was applied in the basal plane of the tetragonal crystal structure. We have found large gapless regions in the superconducting phase diagram of ErNi2B2C, extending between different magnetic transitions. A close correlation between magnetic transitions and Hc2(T) is found, showing that superconductivity is strongly linked to magnetism.
Galvis, J. A.; Crespo, M.; Guillamón, I.; Suderow, H.; Vieira, S.; García Hernández, M.; Bud’ko, Sergey L.; and Canfield, Paul C., "Magnetic and superconducting phase diagrams in ErNi2B2C" (2012). Physics and Astronomy Publications. 650.