Superconductivity

Einstein's early thoughts about superconductivity are discussed as a case study of how theoretical physics reacts to experimental findings that are incompatible with established theoretical notions. One such notion that is discussed is the model of electric conductivity implied by Drude's electron theory of metals, and the derivation of the Wiedemann-Franz law within this framework.

Einstein's early thoughts about superconductivity are discussed as a case study of how theoretical physics reacts to experimental findings that are incompatible with established theoretical notions. O

UC SANTA BARBARA (US) — Scientists have used Einstein’s theory of relativity to demonstrate it …

Einstein's early thoughts about superconductivity are discussed as a case study of how theoretical physics reacts to experimental findings that are incompatible with established theoretical notions.

In 1908, the physics world woke up to a puzzle whose layers have continued to stump the greatest scientists of the century ever since.

In 1908, the physics world woke up to a puzzle whose layers have continued to stump the greatest scientists of the century ever since.

Einstein's early thoughts about superconductivity are discussed as a case study of how theoretical physics reacts to experimental findings that are incompatible with established theoretical notions.

We used magnetic susceptibility, resistivity and heat capacity measurements to characterize the superconducting state in the Einstein solid V Al10.1.

The theoretical oriented scientist cannot be envied, because nature, i.e. the experiment, is a relentless and not very friendly judge of his work.

Marvin Cohen, University Professor, UC Berkeley

One proposed explanation of unconventional superconductivity involves describing it in terms of a crossover from a conventional superconducting state to a Bose-Einstein condensate state. Angle-resolved photoelectron measurements of an iron chalcogenide superconductor could provide evidence for such crossover behaviour.

A cage compound of the form A x V 2 Al 20 (Al 10 V), which was called an Einstein solid by Caplin and coworkers 40 years ago, is revisited to investigate the low-energy, local vibrations of the A atoms and their effects on the electronic and superconducting properties of the compound.

We use the effective-action approach to quantum-field theory to study some of the thermodynamic properties of a charged ideal nonrelativistic gas of spin-0 bosons in a weak external magnetic field. It is shown how Bose-Einstein condensation and the Meissner-Oschenfeld effect arise. By using generalized \ensuremath{\zeta} functions and dimensional regularization a very complete analysis for a space of arbitrary dimension can be given.