{"title":"On creep of trapped flux near Tc in MgB2 and CaKFe4As4","authors":"Sergey L. Bud’ko, Mingyu Xu , Paul C. Canfield","doi":"10.1016/j.physc.2024.1354487","DOIUrl":null,"url":null,"abstract":"<div><p>We present flux creep data taken at different temperatures on single crystals of known, ambient pressure, superconductors, CaKFe<sub>4</sub>As<sub>4</sub> and MgB<sub>2</sub>, taken using the protocol that is common for trapped flux measurements. Using our results, we show that the time dependence of the magnetic moment in H<sub>3</sub>S is remarkably similar to the magnetization relaxation rates observed in established superconductors at ambient pressure, where in the latter cases this can be unambiguously assigned to flux creep.</p></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"620 ","pages":"Article 1354487"},"PeriodicalIF":1.3000,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica C-superconductivity and Its Applications","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921453424000522","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
We present flux creep data taken at different temperatures on single crystals of known, ambient pressure, superconductors, CaKFe4As4 and MgB2, taken using the protocol that is common for trapped flux measurements. Using our results, we show that the time dependence of the magnetic moment in H3S is remarkably similar to the magnetization relaxation rates observed in established superconductors at ambient pressure, where in the latter cases this can be unambiguously assigned to flux creep.
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.
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