Evidence for filamentary superconductivity nucleated at antiphase domain walls in antiferromagnetic CaFe2As2

• Main Authors: Hu, Tao, Tee, Xianyang, Panagopoulos, Christos, Xiao, H., Dioguardi, A. P., apRoberts-Warren, N., Shockley, A. C., Crocker, J., Nisson, D. M., Viskadourakis, Z., Radulov, I., Almasan, C. C., Curro, N. J.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Chemistry::Physical chemistry::Magnetochemistry
• Online Access: https://hdl.handle.net/10356/95534; http://hdl.handle.net/10220/9301
• Institution: Nanyang Technological University

Resistivity, magnetization, and microscopic 75As nuclear magnetic resonance (NMR) measurements in the antiferromagnetically ordered state of the iron-based superconductor parent material CaFe2As2 exhibit anomalous features that are consistent with the collective freezing of domain walls. Below T*≈10...