Possible Evidence for Berezinskii–Kosterlitz–Thouless Transition in Ba(Fe(0.914)Co(0.086))(2)As(2) Crystals

In this study, we measure the in-plane transport properties of high-quality Ba(Fe(0.914)Co(0.086))(2)As(2) single crystals. Signatures of vortex unbinding Berezinskii–Kosterlitz–Thouless (BKT) transition are shown from both the conventional approach and the Fisher–Fisher–Huse dynamic scaling analysi...

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Detalles Bibliográficos
Autores principales: Jiao, Wen-He, Xu, Xiao-Feng, Jiang, Hao, Xu, Zhu-An, Chen, Qing-Hu, Cao, Guang-Han
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8585216/
https://www.ncbi.nlm.nih.gov/pubmed/34771819
http://dx.doi.org/10.3390/ma14216294
Descripción
Sumario:In this study, we measure the in-plane transport properties of high-quality Ba(Fe(0.914)Co(0.086))(2)As(2) single crystals. Signatures of vortex unbinding Berezinskii–Kosterlitz–Thouless (BKT) transition are shown from both the conventional approach and the Fisher–Fisher–Huse dynamic scaling analysis, in which a characteristic Nelson–Kosterlitz jump is demonstrated. We also observe a non-Hall transverse signal exactly at the superconducting transition, which is explained in terms of guided motion of unbound vortices.

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