The Critical Exponent of the Anisotropic Electrical Resistivity in the Vicinity of the Neel Temperature of Chromium
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概要
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Anisotropic resistances with respect to the spin-density-wave vector Q of a single-crystalline chromium were measured near T_N. Their temperature derivatives are analyzed by a power law. In the equation of dρ/dT=-A_ε^<-λ>+B, where A and B are both positive constant, the index λ is about 0.5 for T<T_N and about 1.5 for T>T_N. The indexes are almost isotropic with respect to Q. For T<T_N, it is considered that the value of λ originates from the order parameter, that is, the temperature dependence of the SDW energy gaps. The index of the order parameter β is estimated to be 1/2 which agrees with its classical value. The additional date obtained in the multi-Q state are also discussed.
- 社団法人日本物理学会の論文
- 1972-03-05
著者
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Mitsui Tadayasu
Department Of Physics Faculty Of Science Hokkaido University
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AKIBA Chikahide
Department of Physics, Faculty of Science, Hokkaido University
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Akiba Chikahide
Department Of Physics Faculty Of Science Hokkaido University
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