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arXiv · 1009.4108

Electron Spin Resonance of the ferromagnetic Kondo lattice CeRuPO

T. Förster·J. Sichelschmidt·C. Krellner·C. Geibel·F. Steglich
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Abstract

The spin dynamics of the ferromagnetic Kondo lattice CeRuPO is investigated by Electron Spin Resonance (ESR) at microwave frequencies of 1, 9.4, and 34~GHz. The measured resonance can be ascribed to a rarely observed bulk Ce3+ resonance in a metallic Ce compound and can be followed below the ferromagnetic transition temperature Tc=14 K. At T>Tc the interplay between the RKKY-exchange interaction and the crystal electric field anisotropy determines the ESR parameters. Near Tc the spin relaxation rate is influenced by the critical fluctuations of the order parameter.

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T. Förster, J. Sichelschmidt, C. Krellner, C. Geibel, F. Steglich. 2010-09-21. Electron Spin Resonance of the ferromagnetic Kondo lattice CeRuPO. https://doi.org/10.1088/0953-8984%2F22%2F43%2F435603

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