Observation of anomalous single-magnon scattering in half-metallic ferromagnets by chemical pressure control
Abstract
Temperature variation of resistivity and specific heat have been measured for prototypical half-metallic ferromagnets, R0.6Sr0.4MnO3, with controlling the one-electron bandwidth W. We have found variation of the temperature scalings in the resistivity from T2 (R = La, and Nd) to T3 (R = Sm), and have interpreted the $T3-law in terms of the anomalous single-magnon scattering (AMS) process in the half-metallic system.
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