1303.2710 (J. E. Hirsch)

Apparent increase in the thickness of superconducting particles at low
temperatures measured by electron holography    [PDF]

J. E. Hirsch

We predict that superconducting particles will show an apparent increase in thickness at low temperatures when measured by electron holography. This will result not from a real thickness increase, rather from an increase in the inner electron potential sensed by the electron wave traveling through the particle, originating in negative charge expulsion from the interior to the surface of the superconductor. The temperature dependence of the observed phase shifts will yield valuable new information on the physics of the superconducting state of metals.

View original: http://arxiv.org/abs/1303.2710