Superconductivity, Superfluidity and Zero-Point Oscillations

Superfluidity and Superconductivity

I AM sorry that Professor Landau was unable to come for two personal reasons. The first is that I have worked on this problem of helium upon which he has also done so much, and I would have liked to have spoken with him about it. The other reason is that I wouldn't have had to give this lecture. Quantum mechanics was developed in 1926, and in the following decade it was rapidly applied to all k...

Kinetic Energy Driven Superconductivity and Superfluidity

The theory of hole superconductivity proposes that superconductivity is driven by lowering of quantum kinetic energy and is associated with expansion of electronic orbits and expulsion of negative charge from the interior to the surface of superconductors and beyond. This physics provides a dynamical explanation of the Meissner effect. Here we propose that similar physics takes place in superfl...

Vortex Density Models for Superconductivity and Superfluidity

We study some functionals that describe the density of vortex lines in superconductors subject to an applied magnetic field, and in BoseEinstein condensates subject to rotational forcing, in quite general domains in 3 dimensions. These functionals are derived from more basic models via Gamma-convergence, here and in the companion paper [4]. In our main results, we use these functionals to obtai...

Superfluidity and Superconductivity in Double-Layered Quantum Hall state

We discuss and review the basic physics that leads to superfluidity/superconductivity in certain quantum Hall states, in particular the so-called double-layered (mmm) state. In the K-matrix description of the quantum correlation in quantum Hall states, those states with det(K) = 0 contain a special correlation that leads to superfluidity/superconductivity. We propose a four-terminal measurement...

Zero-point oscillations in the vicinity of atoms