Intertype superconductivity evoked by the interplay of disorder and multiple bands

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外文摘要：Nonmagnetic impurity scattering is known to shift up the Ginzburg-Landau parameter κ of a superconductor.In this case,when the system is initially in type Ⅰ,it can change its magnetic response,crossing the intertype domain with κ～1 between the two standard superconductivity types and arriving at type Ⅱ.In the present work we demonstrate that the impact of disorder can be much more profound in the presence of the multiband structure of the charge carrier states.In particular,when the band diffusivi-ties differ from each other,the intertype domain tends to expand signifi-cantly,including points with κ(＞＞)1 that belong to deep type-Ⅱ in conven-tional single-band superconductors.Our finding sheds light on the nontrivial disorder effect and significantly complements earlier results on the enlargement of the intertype domain in clean multiband superconduc-tors.

外文关键词：

superconductivitydisorderintertype superconductivitytwo-band model

作者：

P.M.Marychev、A.A.Shanenko、A.V.Vagov

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作者单位：

HSE University,101000 Moscow,Russia

Center for Advanced Mesoscience and Nanotechnology,MIPT,Dolgoprudny,141700,Russia

基金：

Basic Research Program of the HSE University used to obtain the extended Ginzburg-Landau theory for strongly disordered supeMinistry of Science and Higher Education of the Russian FederationRussian Science Foundation

项目编号：

Project FSMG-2023-001423-7230004

出版年：

2024

DOI：

10.1007/s11467-023-1379-y

物理学前沿

高等教育出版社

物理学前沿

CSTPCD

影响因子：0.816

ISSN：2095-0462

年,卷(期)：2024.19(4)