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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Bibliographic Details
Published in:Scientific reports 2019-01, Vol.9 (1), p.664-664, Article 664
Main Authors: 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
Format: Article
Language:English
Subjects:
142/126
639/766/119/1003
639/766/119/995
Crystals
Electrodes
Electromagnetism
Humanities and Social Sciences
Impurities
Investigations
Laboratories
Measurement techniques
multidisciplinary
Physics
Science
Science (multidisciplinary)
Single crystals
Thin films
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Summary: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.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-37152-y