Anomalous transverse resistance in 122-type iron-based superconductors

The study of transverse resistance of superconductors is essential to understand the transition to superconductivity. Here, we investigated the in-plane transverse resistance of Ba(0.5)K(0.5)Fe(2)As(2) superconductors, based on ultra-thin micro-bridges fabricated from optimally doped single crystals...

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Detalles Bibliográficos
Autores principales: Lv, Yangyang, Dong, Yu, Lu, Dachuan, Tian, Wanghao, Xu, Zuyu, Chen, Wei, Zhou, Xianjing, Yuan, Jie, Jin, Kui, Bao, Song, Li, Shichao, Wen, Jinsheng, Chibotaru, Liviu F., Schwarz, Tobias, Kleiner, Reinhold, Koelle, Dieter, Li, Jun, Wang, Huabing, Wu, Peiheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6345833/
https://www.ncbi.nlm.nih.gov/pubmed/30679657
http://dx.doi.org/10.1038/s41598-018-37152-y
Descripción
Sumario:The study of transverse resistance of superconductors is essential to understand the transition to superconductivity. Here, we investigated the in-plane transverse resistance of Ba(0.5)K(0.5)Fe(2)As(2) superconductors, based on ultra-thin micro-bridges fabricated from optimally doped single crystals. An anomalous transverse resistance was found at temperatures around the superconducting transition, although magnetic order or structure distortion are absent in the optimal doping case. With the substitution of magnetic and nonmagnetic impurities into the superconducting layer, the anomalous transverse resistance phenomenon is dramatically enhanced. We find that anisotropic scattering or the superconducting electronic nematic state related with the superconducting transition may contribute to this phenomenon.

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