Cooper Pairs in Insulators?!


Formale Metadaten

Titel Cooper Pairs in Insulators?!
Autor James Valles
Herausgeber Fermi National Accelerator Laboratory (Fermilab)
Erscheinungsjahr 2008
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Physik
Abstract Nearly 50 years elapsed between the discovery of superconductivity and the emergence of the microscopic theory describing this zero resistance state. The explanation required a novel phase of matter in which conduction electrons joined in weakly bound pairs and condensed with other pairs into a single quantum state. Surprisingly, this Cooper pair formation has also been invoked to account for recently uncovered high-resistance or insulating phases of matter. To address this possibility, we have used nanotechnology to create an insulating system that we can probe directly for Cooper pairs. I will present the evidence that Cooper pairs exist and dominate the electrical transport in these insulators and I will discuss how these findings provide new insight into superconductor to insulator quantum phase transitions. 

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