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Spin density wave of itinerant heavy electrons in Ce(Ru0.85Rh0.15)2Si2 |
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| Authors: | Y Miyako T Takeuchi T Taniguchi Y Yamamoto S Kawarazaki M Acet G Dumpich EF Wassermann |
| Institution: | 1. Department of Earth and Space Science, Faculty of Science, Osaka University, Toyonaka, 560, Japan 2. Low Temperature Center, Osaka University, Toyonaka, 560, Japan 3. Tieftemperaturphysik, Gerhard Mercator Universit?t, D-47048, Duisburg, Germany |
| Abstract: | The magnetic properties of Ce(Ru0.85Rh0.15)2Si2 were studied by neutron scattering and measurements of magnetization, susceptibility, specific heat and thermal expansion as a function of temperature. We observe a crossover from a high temperature localized spin to a low temperature heavy electron state. Spin density wave (SDW) behavior appears in the heavy electron state below TN = 5.5 K and the volume change due to spin quantum fluctuations associated with the SDW and the Kondo screening is reminiscent of moment-volume instabilities of the INVAR and anti-INVAR behavior of 3 d transition metal alloys. |
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