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arXiv · 0709.3655

Nonlinear paramagnetic magnetization in the mixed state of CeCoIn_5

H. Xiao·T. Hu·T. A. Sayles·M. B. Maple·C. C. Almasan
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Abstract

Torque and magnetization measurements in magnetic fields $H$ up to 14 T were performed on CeCoIn$_5$ single crystals. The amplitude of the paramagnetic torque shows an $H^{2.3}$ dependence in the mixed state and an $H^{2}$ dependence in the normal state. In addition, the mixed-state magnetizations for both $H\parallel c$ and $H\parallel ab$ axes show anomalous behavior after the subtraction of the corresponding paramagnetic contributions as linear extrapolations of the normal-state magnetization. These experimental results point towards a nonlinear paramagnetic magnetization in the mixed state of CeCoIn$_5$, which is a result of the fact that both orbital and Pauli limiting effects dominate in the mixed state.

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H. Xiao, T. Hu, T. A. Sayles, M. B. Maple, C. C. Almasan. 2007-09-23. Nonlinear paramagnetic magnetization in the mixed state of CeCoIn_5. https://doi.org/10.1016/j.physb.2007.10.254

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