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ESR investigation of the spin dynamics in (Gd1−xYx)2PdSi3 |
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| Authors: | J. Deisenhofer H.-A. Krug von NiddaA. Loidl E.V. Sampathkumaran |
| Affiliation: | a Experimentalphysik V, EKM, Universität Augsburg, Universitaetsstr. 1, 86135 Augsburg, Germany b Tata institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India |
| Abstract: | We report electron-spin resonance (ESR) measurements in polycrystalline samples of (Gd1−xYx)2PdSi3. We observe the onset of a broadening of the linewidth and of a decrease of the resonance field at approximately twice the Néel temperature in the paramagnetic state. This characteristic temperature coincides with the electrical resistivity minimum. The high-temperature behavior of the linewidth is governed by a strong bottleneck effect. |
| Keywords: | 76.30.&minus v 75.30.Vn 75.30.Kz |
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