Temperature Dependences of Magnetization and Spin Waves in MnP

• Takase Akio

  Department of Physics, Faculty of Science, Tohoku University

• Kasuya Tadao

  Department of Physics, Faculty of Science, Tohoku University

書誌事項

タイトル別名

• Temperature Dependences of Magnetizatio

抄録

The temperature dependence of the easy axis magnetization in the ferromagnetic phase of MnP is measured to an accuracy of ΔM⁄M<±5×10⁻⁴ over a range from 4.2 K to 280 K. Instead of the usual T^3⁄2 law, T ln T dependence holds up to about T_c⁄2. The following spin wave dispersion is expected to exsist at 0 K; along the a axis it is nearly constant up to q_a=Q and increases very rapidly beyond Q, where Q is the screw propagation vector, while for perpendicular to the a axis it is quadratic in q_⊥. At a finite temperature, the calculated two-magnon renormalization causes increase of the magnon energy near q_a∼Q which induces an anomalous suppression for decrease of magnetization in MnP. The ferro-screw phase transition seems also to be due to this effect.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 47 (2), 491-497, 1979

  一般社団法人 日本物理学会

キーワード

• General Physics and Astronomy

詳細情報

• CRID: 1390282679162135424
• NII論文ID: 110001964652
• NII論文ID: 210000088286
• NII論文ID: 130003896034
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.47.491
• BIBCODE: 1979JPSJ...47..491T
• COI: 1:CAS:528:DyaE1MXltlejtb0%3D
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 2059338
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2059338
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.47.491
• 本文言語コード: en
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