RESISTIVE AND THERMODYNAMIC TRANSITIONS OF A 2-DIMENSIONAL SUPERCONDUCTOR IN A MAGNETIC-FIELD

We compare the resistivity, magnetization, and specific heat of superc onducting amorphous Mo77Ge23 layers separated by insulating amorphous germanium. The fluctuation magnetization and specific heat are in exce llent agreement with the 2D lowest Landau level scaling relations. The broadening of the resistive transition is similar to that observed in the specific heat, but is not in quantitative agreement with the prop osed scaling relations. The resistivity becomes activated immediately below the thermodynamic transition, indicating little or no region des cribable by conventional flux flow.