The AuGa2 Dilemma — Superconducting Version
The magnetic response of two nominal AuGa2 samples has been studied as functions of temperature, applied magnetic field and pressure. These samples display widely different superconducting transition temperatures, critical magnetic field curves and pressure effects. Variations of the initial slope, i.e., (dHc/dT)To, with pressure supports the concept of an electronic transition at about 0.55 GPa. Changes in the magnetic response as a function of pressure suggest that some sort of lattice transformation must also occur at this pressure.
KeywordsInitial Slope Superconducting Transition Temperature Magnetic Response Single Crystal Sample Critical Magnetic Field
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