Thickness-magnetic field phase diagram at the superconductor-insulator transition in 2d

N. Marković, C. Christiansen, A. M. Goldman

Research output: Contribution to journalArticlepeer-review

97 Scopus citations

Abstract

The superconductor-insulator transition in ultrathin films of amorphous Bi has been tuned by changing both film thickness and magnetic field on the same set of films. A thickness-magnetic field phase diagram has been mapped in the T=0 limit. A finite size scaling analysis has been carried out to determine the critical exponent product νz, which was found to be 1.2±0.2 and 1.4±0.2 for the thickness-tuned transitions in zero and finite magnetic fields, respectively. These are different from the exponent found for the magnetic-field-tuned transition in the same system, 0.7±0.2.

Original languageEnglish (US)
Pages (from-to)5217-5220
Number of pages4
JournalPhysical review letters
Volume81
Issue number23
DOIs
StatePublished - 1998

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