Novel Aharonov-Bohm-like effect: Detectability of the vector potential in a solenoidal configuration with a ferromagnetic core covered by superconducting lead, and surrounded by a thin cylindrical shell of aluminum

2012/06/23 by R. Y. Chiao, Chiao, R. Y.
Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Physics of Superconductivity and Magnetism #Quantum Physics (quant-ph) #Quantum and electron transport phenomena

paper · pdf · doi:10.48550/arxiv.1206.5362

openalex publication_date 2012/06/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The flux as measured by the Josephson effect in a SQUID-like configuration with a ferromagnetic core inserted into its center, is shown to be sensitive to the vector potential arising from the central ferromagnetic core, even when the core is covered with a superconducting material that prevents any magnetic field lines from ever reaching the perimeter of the SQUID-like configuration. This leads to a macroscopic, Aharonov-Bohm-like effect that is observable in an asymmetric hysteresis loop in the response of the SQUID-like configuration to an externally applied magnetic field.

Citations

• Hysteretic method for measuring the flux trapped within the core of a\n superconducting lead-coated ferromagnetic torus by a linked superconducting\n tin ring, in a novel Aharonov-Bohm-like effect based on the Feynman\n path-integral principle

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