Anomalous parallel-field negative magnetoresistance in ultrathin films near the superconductor-insulator transition

2004/06/30 by Kevin A. Parendo, L. M. Hernandez, A. Bhattacharya +2 · 1 citation
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Theoretical and Computational Physics #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.70.212510

Revised content includes revised argument and new figures 3 and 4. Totals: 4 pages, 4 figures

arxiv created 2004/08/14 · openalex publication_date 2004/12/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A parallel-field negative magnetoresistance has been found in quench-condensed ultrathin films of amorphous bismuth in the immediate vicinity of the thickness-tuned superconductor-insulator transition. The effect appears to be a signature of quantum fluctuations of the order parameter associated with the quantum critical point.

Citations

• Continuous Quantum Phase Transitions
• Bottom-loading dilution refrigerator with ultrahigh vacuum deposition capability
• Observation of the parallel-magnetic-field-induced superconductor-insulator transition in thin amorphous InO films

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• Microscopic analysis of the superconducting quantum critical point: Finite-temperature crossovers in transport near a pair-breaking quantum phase transition