Quantum Fluctuation and Geometrical Frustration Effects on Electric Polarization
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- Watanabe Tsutomu
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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- Ishihara Sumio
- Department of Physics, Tohoku University
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Abstract
We examine theoretically the possibility of ferroelectricity caused by electronic charge order without inversion symmetry motivated by layered iron oxides. Quantum electronic models in a paired-triangular lattice are analyzed by utilizing the variational Monte Carlo simulation. Our calculations demonstrate that the combined effects of electron transfer between the layers, corresponding to quantum fluctuation between the potential minima, and geometrical frustration promote the appearance of electric polarization. Our results contrast with the conventional manner of quantum fluctuation in ferroelectricity.
Journal
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 78 (11), 113702-113702, 2009
THE PHYSICAL SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390001204197029760
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- NII Article ID
- 130005437215
- 210000108052
- 40016829612
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- NII Book ID
- AA00704814
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- ISSN
- 13474073
- 00319015
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- NDL BIB ID
- 10438939
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed