Prediction of unexpected behavior of the mean inner potential of superconductors

Abstract

Off-axis electron holography can measure the mean inner electric potential of materials. The theory of hole superconductivity predicts that when a material is cooled into the superconducting state it expels electrons from its interior to the surface, giving rise to a mean inner potential that increases with sample thickness. Instead, in a normal metal and in a conventional BCS superconductor the mean inner potential is expected to be independent of sample thickness and temperature. Thus, this experiment can provide a definitive test of the validity of the theory of hole superconductivity.

References in corpus (2)

• Spin Meissner Effect in Superconductors and the Origin of the Meissner Effect
• Kinetic energy driven superconductivity, the origin of the Meissner effect, and the reductionist frontier

Cited by in corpus (3)

• Dynamic Hubbard model: kinetic energy driven charge expulsion, charge inhomogeneity, hole superconductivity, and Meissner effect
• Superconductivity, diamagnetism, and the mean inner potential of solids
• Apparent increase in the thickness of superconducting particles at low temperatures measured by electron holography