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arXiv · 0810.5623

Coexistence of Antiferromagnetism and Superconductivity in PrFeAsO$_{1-δ}$

D. Kubota·T. Ishida·M. Ishikado·S. Shamoto·H. Eisaki·H. Kito·A. Iyo
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Abstract

A high-quality PrFeAsO$_{1-δ}$ single crystal ($T_{\rm c}=44$ K) has been investigated by the magnetic torque. Antiferromagnetism of the Pr$^{3+}$ ions was found to coexist with superconductivity in PrFeAsO$_{1-δ}$ at temperatures below $T_\mathrm{N}=14$ K. We predict a magnetic structure that is not in accordance with earlier neutron studies performed using polycrystalline nonsuperconducting specimens. As the temperature decreases, the superconducting anisotropy $γ\sim 4$ of PrFeAsO$_{1-δ}$ increases near $T_c$ and tends to decrease slightly at lower temperatures.

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D. Kubota, T. Ishida, M. Ishikado, S. Shamoto, H. Eisaki, H. Kito, A. Iyo. 2010-01-24. Coexistence of Antiferromagnetism and Superconductivity in PrFeAsO$_{1-δ}$. https://arxiv.org/abs/0810.5623

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