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arXiv · 1003.5133

Anisotropic electron spin resonance of YbIr2Si2

T. Gruner·J. Wykhoff·J. Sichelschmidt·C. Krellner·C. Geibel·F. Steglich
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Abstract

A series of electron spin resonance (ESR) experiments were performed on a single crystal of the heavy fermion metal YbIr2Si2 to map out the anisotropy of the ESR-intensity I_ESR which is governed by the microwave field component of the g-factor. The temperature dependencies of I_ESR(T) and g(T) were measured for different orientations and compared within the range 2.6K \le T \le 16K. The analysis of the intensity dependence on the crystal orientation with respect to both the direction of the microwave field and the static magnetic field revealed remarkable features: The intensity variation with respect to the direction of the microwave field was found to be one order of magnitude smaller than expected from the g-factor anisotropy. Furthermore, we observed a weak basal plane anisotropy of the ESR parameters which we interpret to be an intrinsic sample property.

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T. Gruner, J. Wykhoff, J. Sichelschmidt, C. Krellner, C. Geibel, F. Steglich. 2010-03-26. Anisotropic electron spin resonance of YbIr2Si2. https://doi.org/10.1088/0953-8984%2F22%2F13%2F135602

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