Evidence of Cooper Pairs on the Insulating Side of the Superconductor–Insulator Transition

M.D Stewart, Jr and James M Valles, Jr

in Conductor-Insulator Quantum Phase Transitions

Published in print June 2012 | ISBN: 9780199592593
Published online September 2012 | e-ISBN: 9780191741050 | DOI:
Evidence of Cooper Pairs on the Insulating Side of the Superconductor–Insulator Transition

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This chapter introduces a new amorphous film system accompanied by a direct experimental probe of Cooper pairs to address what charge carriers are present through the superconductor to insulator quantum phase transition. The chapter reviews the experimental evidence for insulators with either fermionic or bosonic charge carriers delineating roughly between thin elemental films and compound films, respectively. The new system consists of thin elemental films patterned with a nano-honeycomb array of holes.These exhibit h/2e magnetoresistance oscillations in the insulating state belying the existence of Cooper pairs. Finally, it analyzes and compare the data gathered on nano-honeycomb films with that of other film systems which exhibit evidence of Cooper pairing in their insulating phases to gain insight into the mechanisms by which different insulating states of the superconductor to insulator transition occur.

Keywords: insulator; amorphous; nano-patterned; Cooper pairs; magnetoresistance; Little-Parks

Chapter.  8210 words.  Illustrated.

Subjects: Mathematical and Statistical Physics

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