Anomalous resistivity near Néel temperature due to the critical scattering: Antifferomagnet |
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Authors: | T Kasuya A Kondo |
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Institution: | Department of Physics, Tohoku University, Sendai, Japan |
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Abstract: | Critical behaviour of the temperature derivative of the electrical resistivity at the Néel temperature is treated. For a small Fermi wave vector, the divergence is the same as that of the specific heat both above and below the Néel temperature. For a large Fermi wave vector, in paramagnetic region, the contributions from the critical and the other regions of q-space are of the same divergence as the specific heat but of different signs from each other. Below Néel temperature, the gap effect is the main origin of divergence. |
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