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铌铼（NbRe）和铌铼氮（NbReN）微米级条带中的上临界磁场。

Upper critical magnetic field in NbRe and NbReN micrometric strips.

作者信息

Makhdoumi Kakhaki Zahra, Leo Antonio, Chianese Federico, Parlato Loredana, Pepe Giovanni Piero, Nigro Angela, Cirillo Carla, Attanasio Carmine

机构信息

Dipartimento di Fisica "E. R. Caianiello", Università degli Studi di Salerno, I-84084 Fisciano (Sa), Italy.

CNR-SPIN, c/o Università degli Studi di Salerno, I-84084 Fisciano (Sa), Italy.

出版信息

Beilstein J Nanotechnol. 2023 Jan 5;14:45-51. doi: 10.3762/bjnano.14.5. eCollection 2023.

DOI:10.3762/bjnano.14.5
PMID:36703906
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9830497/
Abstract

Non-centrosymmetric superconductors have recently received significant interest due to their intriguing physical properties such as multigap and nodal superconductivity, helical vortex states, as well as non-trivial topological effects. Moreover, large values of the upper critical magnetic field have been reported in these materials. Here, we focus on the study of the temperature dependence of the perpendicular magnetic field of NbRe and NbReN films patterned in micrometric strips. The experimental data are studied within the Werthamer-Helfand-Hohenberg theory, which considers both orbital and Zeeman pair breaking. The analysis of the results shows different behavior for the two materials with a Pauli contribution relevant only in the case of NbReN.

摘要

非中心对称超导体因其诸如多能隙和节点超导性、螺旋涡旋态以及非平凡拓扑效应等有趣的物理性质，近来受到了广泛关注。此外，在这些材料中还报道了较高的上临界磁场值。在此，我们专注于对以微米级条带图案化的NbRe和NbReN薄膜的垂直磁场温度依赖性的研究。实验数据是在考虑了轨道和塞曼对破坏的韦特哈默 - 赫尔方德 - 霍恩贝格理论框架内进行研究的。结果分析表明这两种材料表现出不同的行为，其中泡利贡献仅在NbReN的情况下相关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/6e92a703d179/Beilstein_J_Nanotechnol-14-45-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/c32f6ba80b29/Beilstein_J_Nanotechnol-14-45-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/c502d25eb2c2/Beilstein_J_Nanotechnol-14-45-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/d992d8c25813/Beilstein_J_Nanotechnol-14-45-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/6e92a703d179/Beilstein_J_Nanotechnol-14-45-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/c32f6ba80b29/Beilstein_J_Nanotechnol-14-45-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/c502d25eb2c2/Beilstein_J_Nanotechnol-14-45-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/d992d8c25813/Beilstein_J_Nanotechnol-14-45-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3242/9830497/6e92a703d179/Beilstein_J_Nanotechnol-14-45-g005.jpg

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本文引用的文献

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Sci Rep. 2022 Jan 28;12(1):1573. doi: 10.1038/s41598-022-05511-5.
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Extremely high upper critical field in BiCh-based (Ch: S and Se) layered superconductor LaOFBiSSe (x = 0.22 and 0.69).
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Sci Rep. 2022 Jan 7;12(1):288. doi: 10.1038/s41598-021-04393-3.
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Upper critical field and superconductor-metal transition in ultrathin niobium films.超薄铌膜中的上临界场和超导体-金属转变
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