Abstract
We report a systematic study on layered metal SrCu4−x P2 single crystals via transport, magnetization, thermodynamic measurements and structural characterization. We find that the crystals show large linear magnetoresistance without any sign of saturation with a magnetic field up to 30 T. We also observe a phase transition with significant anomalies in resistivity and heat capacity at T p ∼ 140 K. Thermal expansion measurement reveals a subtle lattice parameter variation near T p, i.e., ΔLc /Lc ∼ 0.062%. The structural characterization confines that there is no structure transition below and above T p. All these results suggest that the nonmagnetic transition of SrCu4−x P2 could be associated with structural distortion.
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