Scaling Behavior of Angular Magnetoresistivity of CeCoIn5 Single Crystals

The angular dependence of in-plane magnetoresistivity of single crystals of CeCoIn$_{5}$ was measured above the zero-field critical temperature T$_{c 0}$ over a temperature T range from T$_{c0}$ to 10 K and applied magnetic fields H up to 14 T. We constructed an H - T phase diagram above T$_{c0}$ for this compound and identified a boundary, which separates regions of positive and negative magnetoresistance in the non-Fermi liquid regime. A critical angle $\theta _{c}$ ($\theta $ is the angle between the direction of the magnetic field and the c axis of the single crystal) is found in the positive magnetoresistance region, which may be correlated with the anisotropy of this material. The in-plane angular magnetoresistivity scales both above and below $\theta _{c}$ with different scaling functions. The temperature and magnetic field dependence of the critical angle $\theta _{c}$ will also be discussed. Our results show that one of the scalings could be the result of flux flow dissipation.