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

Abstract

A high-quality PrFeAsO${}_{1-\delta }$ single crystal ($T_{\mathrm{c}}=44$ K) has been investigated by the magnetic torque. Antiferromagnetism of the Pr${}^{3+}$ ions was found to coexist with superconductivity in PrFeAsO${}_{1-\delta }$ 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 $\gamma \sim 4$ of PrFeAsO${}_{1-\delta }$ increases near $T_c$ and tends to decrease slightly at lower temperatures.

References in corpus (4)

• Microwave Penetration Depth and Quasiparticle Conductivity in PrFeAsO_1-y Single Crystals : Evidence for a Full-Gap Superconductor
• Caloric Determination of the Upper Critical Fields and Anisotropy of NdFeAsO1-xFx Single Crystals
• Probing multi-band superconductivity and magnetism in SmFeAsO${}_{0.8}$F${}_{0.2}$ single crystals by high-field vortex torque magnetometry
• Pressure-induced superconductivity in PrOxFeAs

Cited by in corpus (2)

• Single crystals of LnFeAsO1-xFx (Ln=La, Pr, Nd, Sm, Gd) and Ba1-xRbxFe2As2: growth, structure and superconducting properties
• Lower Critical Field, Anisotropy, and Two-Gap Features of LiFeAs