Student Author: Joe Porembski and Karl Tata  (Class of 2007)
Faculty Author: Sasha Dukan

The differential conductance between a surface of a disordered  type-II superconductor and a tip of Scanning Tunneling Microscope (STM) in high magnetic field is analyzed. It is determined that scalar impurities enhance the tunneling conductance at all fields considered. This is a consequence of a presence of gapless and near gapless regions in the quasiparticle spectrum at the Fermi surface. This theoretical model is used to calculate differential conductance in borocarbide superconductor  LuNi₂B₂C.

Supported by the Research Corporation Cottrell College Science Award.

Project Webpage: http://faculty.goucher.edu/sdukan/dukanweb.html