Spin-Density-Wave,Charge-Density-Wave and Strain-Wave in Chromium.II. : Effects of Spin Polarization of Reservoir and Imperfect Nesting

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概要

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• A previous theory of the spin-density-wave (SDW) with second harmoniccharge-density-wave and strain-wave in chromiurrn is extended by considering thespin polarization of the reservoir and the imperfect nesting. The paramagneticto SDW phase transition is studied. Although the reservoir away from the Fermilevel e. (r " -part) bears the spin polarization much larger than the reservoir neara. (r'-part), the r ' -part does not contribute to the second harmonics. The effect ofthe r'-part on the second harmonics is discussed qualitatively. The r ' -part isshown to give rise to another new effect favorable for the first order transition andresponsible for temperature-variation of the SDW wave number. The imperfectnesting is considered with a band model extended from ottr previous model ina similar way to Liu's calculation, but is found to play no essential role in thefirst order transition.

• 社団法人日本物理学会の論文
• 1978-05-15

著者

• Kotani Akio

  The Research Institute For Iron Steel And Other Metals Tohoku University

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• Spin-Density-Wave,Charge-Density-Wave and Strain-Wave in Chromium.II. : Effects of Spin Polarization of Reservoir and Imperfect Nesting

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