Superexchange Interaction and Anisotropic Superexchange (Dzyaloshinskii-Moriya) Interaction
Yang, Il-Kyu;Bang, Kil-Hyun;Kim, Bum-Hyun;Min, Byung-Il;
Abstract
Yang, Il-Kyu;Bang, Kil-Hyun;Kim, Bum-Hyun;Min, Byung-Il;
Abstract
초교환 상호작용은 MnO, $MnF_2$ 와 같은 전이금속 화합물에서 나타나는 반강자성을 설명하기 위해서 도입된 상호작용이다. 이 초교환 상호작용에 스핀-궤도 결합 효과를 포함시키면 비등방성 초교환(Dzyaloshinskii-Moriya: DM) 상호작용이 된다. 이 비등방성 초교환 DM 상호작용으로 ${\alpha}-Fe_2O_3$ , $MnCO_3$ , $CrF_3$ 등에서 나타나는 약강자성을 설명할 수 있다. The superexchange interaction is introduced to explain antiferromagnetic ordering in transition metal compounds such as MnO and $MnF_2$ . The anisotropic superexchange (Dzyaloshinskii-Moriya: DM) interaction can be derived by incorporating the spin-orbit interaction into the superexchange interaction. The anisotropic superexchange DM can account for the weak ferromagnetism observed in transition metal compounds such as ${\alpha}-Fe_2O_3$ , $MnCO_3$ , $CrF_3$ .
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초교환 상호작용은 MnO, $MnF_2$ 와 같은 전이금속 화합물에서 나타나는 반강자성을 설명하기 위해서 도입된 상호작용이다. 이 초교환 상호작용에 스핀-궤도 결합 효과를 포함시키면 비등방성 초교환(Dzyaloshinskii-Moriya: DM) 상호작용이 된다. 이 비등방성 초교환 DM 상호작용으로 ${\alpha}-Fe_2O_3$ , $MnCO_3$ , $CrF_3$ 등에서 나타나는 약강자성을 설명할 수 있다. The superexchange interaction is introduced to explain antiferromagnetic ordering in transition metal compounds such as MnO and $MnF_2$ . The anisotropic superexchange (Dzyaloshinskii-Moriya: DM) interaction can be derived by incorporating the spin-orbit interaction into the superexchange interaction. The anisotropic superexchange DM can account for the weak ferromagnetism observed in transition metal compounds such as ${\alpha}-Fe_2O_3$ , $MnCO_3$ , $CrF_3$ .
Key concepts: Superexchange, Antiferromagnetism, Ferromagnetism, Condensed matter physics, Anisotropy, Physics, Transition metal, Metal