Comment on "Vortices induced in a superconducting loop by asymmetric kinetic inductance and their detection in transport measurements"

TL;DR

This paper critiques a previous theoretical study on vortices in superconducting loops, clarifying the true nature of experimental results and correcting misconceptions about asymmetry effects.

Contribution

It provides a critical analysis of prior theoretical claims, emphasizing the actual paradoxical behavior observed in asymmetric superconducting loops.

Findings

Previous theory incorrectly linked asymmetry to vortex behavior

Experimental results reveal paradoxical effects not explained by prior models

Clarification of the true physical mechanisms in asymmetric loops

Abstract

The paper by G. R. Berdiyorov, M. V. Milosevic, and F. M. Peeters [Phys. Rev. B 81, 144511 (2010)] studies theoretically the dynamic properties of a superconducting loop. The authors claim that their consideration of asymmetric loop relates to our experimental results in this field. We point out that this claim is incorrect and explain shortly the true paradoxical essence of the results of our measurements of asymmetric superconducting loop.