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journal article·2023-04-01Open access

Spin chirality driven by the Dzyaloshinskii–Moriya interaction in one-dimensional antiferromagnetic chain

Xing Guo, Yaojin Li, Zimeng Yao, Chenglong Jia, Lan Zhang

AIP Advances· Volume 13· Issue 4
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Source abstract

Abstract

Dzyaloshinskii–Moriya (DM) interactions cause many interesting physical features, such as topologically nontrivial magnetic skyrmions and chiral domain walls. These interactions become more pronounced in low-dimensional systems. We investigated a one-dimensional Heisenberg spin-1/2 chain with an asymmetric DM interaction. The results show that, upon applying a nonzero DM interaction, the Néel ground state transitions to a spin chiral phase. Moreover, using the mean-field approximation, we obtain the dispersion of the energy spectrum, from which the z-axis spin chirality is calculated as a function of the strength of the DM interaction for low-lying excitations. The results indicate that the DM interaction facilitates chirality for Dz ≤ J and induces a spin-gapped chiral state.
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Research context

OpenAlex topics: Magnetic properties of thin films · Physics of Superconductivity and Magnetism · Advanced Condensed Matter Physics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechanical and Materials Engineering, Xi’an University 1 , Xi’an 710065, People’s Republic of China

School of Electronic and Information Engineering, Xi’an Jiaotong University 2 , Xi’an 710049, People’s Republic of China

Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University 3 , Lanzhou 730000, People’s Republic of China

Department of Physics, Tianshui Normal University 4 , Tianshui 741001, People’s Republic of China

Funding

Natural Science Basic Research Program of Shaanxi Province · Natural Science Foundation of Shaanxi Provincial Department of Education

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