Dzyaloshinskii-Moriya Interaction between Multipolar Moments in 5d¹ Systems
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説明
We propose a new type of Dzyaloshinskii-Moriya (DM) interactions which act on high-rank multipolar moments such as quadrupolar and octupolar moments. Here we consider 5d1 systems with broken spatial inversion symmetry, where the interplay of electron correlation, the spin-orbit coupling, and inversion symmetry breaking plays a crucial role. Using a numerical diagonalization on a two-site multiorbital Hubbard model, we reveal that anti-symmetric products of multipole operators have finite expectation values, indicating the existence of DM interactions for multipoles. We also find that the spin-orbit coupling dependences of DM interactions for multipoles are significantly different depending on the lattice structure. Finally, we discuss the numerical results for small and large spin-orbit coupling region by using perturbative analysis.
8 pages, 10 figures
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 89 (7), 074702-, 2020-07
Tokyo : Physical Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1524232504612773888
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- NII論文ID
- 40022283413
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- NII書誌ID
- AA00704814
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- ISSN
- 00319015
- 13474073
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- NDL書誌ID
- 030513170
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- 本文言語コード
- en
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- 資料種別
- journal article
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- NDL 雑誌分類
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- ZM35(科学技術--物理学)
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- データソース種別
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- NDLサーチ
- Crossref
- CiNii Articles
- KAKEN
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