https://scholars.lib.ntu.edu.tw/handle/123456789/340440
標題: | Relationship between ferroelectricity and Dzyaloshinskii-Moriya interaction in multiferroics and the effect of bond-bending | 作者: | CHONG-DER HU | 公開日期: | 2008 | 卷: | 77 | 期: | 17 | 來源出版物: | Physical Review B - Condensed Matter and Materials Physics | 摘要: | We studied the microscopic mechanism of multiferroics, in particular, with the "spin current" model. Starting from a system with helical spin configuration, we solved for the forms of the electron wave functions and analyzed their characteristics. The relation between ferroelectricity and Dzyaloshinskii-Moriya interaction is clearly established. There is also a simple relation between the electric polarization and the wave vector of magnetic orders. Finally, we show that the bond-bending existing in transition metal oxides can enhance ferroelectricity. © 2008 The American Physical Society. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-43549083015&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/340440 |
ISSN: | 10980121 | DOI: | 10.1103/PhysRevB.77.174418 |
顯示於: | 物理學系 |
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