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arXiv · 1406.2460

Angular variation of the magnetoresistance of the superconducting ferromagnet UCoGe

T. V. Bay·A. M. Nikitin·T. Naka·A. McCollam·Y. K. Huang·A. de Visser
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Abstract

We report a magnetoresistance study of the superconducting ferromagnet UCoGe. The data, taken on single-crystalline samples, show a pronounced structure at $B^* = 8.5$~T for a field applied along the ordered moment $m_0$. Angle dependent measurements reveal this field-induced phenomenon has an uniaxial anisotropy. Magnetoresistance measurements under pressure show a rapid increase of $B^*$ to 12.8~T at 1.0~GPa. We discuss $B^*$ in terms of a field induced polarization change. Upper critical field measurements corroborate the unusual S-shaped $B_{c2}(T)$-curve for a field along the $b$-axis of the orthorhombic unit cell.

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T. V. Bay, A. M. Nikitin, T. Naka, A. McCollam, Y. K. Huang, A. de Visser. 2014-06-10. Angular variation of the magnetoresistance of the superconducting ferromagnet UCoGe. https://doi.org/10.1103/physrevb.89.214512

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