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

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

2000-09-04

arxiv.org/abs/cond-mat/0009035v1

Physics

Condensed Matter

Strongly Correlated Electrons

To appear in Phys. Rev. Lett., 3 pages + 4 EPS figures

Scientific paper

10.1103/PhysRevLett.85.3914

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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