Negative magnetoresistance in superconducting stripes

IF 1.5 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2026-01-01 Epub Date: 2025-12-04 DOI:10.1016/j.physc.2025.1354821

B.Ya. Shapiro , Baruch Rosenstein , Guy Leshem

引用次数: 0

Abstract

For superconducting wires with small diameters quantum phase slippage is an important process which can yield a non-vanishing wire resistance down to very low temperatures. The effect of negative magnetoresistance for thin superconducting wire was considered in a simple model. One can conclude that the negative magnetoresistance in wires (narrow channels) are caused by decreasing number of the PSC due to interaction with entered and pinned inside Abrikosov vortices. With a subsequent increase in the magnetic field, the Abrikosov vortices replacing the phase slip centers making the main contribution to the magnetoresistance, which changes sign and becomes positive. The theory is in a good agreement with experiments.

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超导条纹中的负磁阻

对于小直径超导导线来说，量子相滑移是一个重要的过程，它可以在很低的温度下产生不消失的导线电阻。在一个简单的模型中考虑了超导细导线负磁电阻的影响。可以得出结论，导线（窄通道）中的负磁电阻是由于与进入和固定在Abrikosov漩涡内的PSC相互作用而导致的PSC数量减少引起的。随着磁场的增大，Abrikosov涡旋取代相滑中心成为磁阻的主要贡献，磁阻变符号为正。理论与实验很吻合。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.