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Observation of anomalous single-magnon scattering in half-metallic ferromagnets by chemical pressure control

T. Akimoto·Y. Moritomo·A. Nakamura·N. Furukawa
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Abstract

Temperature variation of resistivity and specific heat have been measured for prototypical half-metallic ferromagnets, R_0.6Sr_0.4MnO_3, with controlling the one-electron bandwidth W. We have found variation of the temperature scalings in the resistivity from T^2 (R = La, and Nd) to T^3 (R = Sm), and have interpreted the $T^3-law in terms of the anomalous single-magnon scattering (AMS) process in the half-metallic system.

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T. Akimoto, Y. Moritomo, A. Nakamura, N. Furukawa. 2000-09-04. Observation of anomalous single-magnon scattering in half-metallic ferromagnets by chemical pressure control. https://doi.org/10.1103/physrevlett.85.3914

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