Magnetization Plateaus by the Field-Induced Partitioning of Spin Lattices
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| Format: | Preprint |
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2024
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| author | Whangbo, Myung-Hwan Koo, Hyun-Joo Kremer, Reinhard K. Vasiliev, Alexander N. |
| author_facet | Whangbo, Myung-Hwan Koo, Hyun-Joo Kremer, Reinhard K. Vasiliev, Alexander N. |
| contents | To search for a conceptual picture describing the magnetization plateau phenomenon, we surveyed the crystal structures and the spin lattices of those magnets exhibiting plateaus in their magnetization vs. magnetic field curves by probing the three questions: (a) why only certain magnets exhibit magnetization plateaus, (b) why there occur several different types of magnetization plateaus, and (c) what controls the widths of magnetization plateaus. We show that the answers to these questions lie in how the magnets under field absorb Zeeman energy hence changing their magnetic structures. The magnetic structure of a magnet insulator is commonly described in terms of its spin lattice, which requires the determination of the spin exchanges nonnegligible strengths between the magnetic ions. Our work strongly suggests that a magnet under magnetic field partitions its spin lattice into antiferromagnetic (AFM) or ferrimagnetic fragments by breaking its weak magnetic bonds. Our supposition of the field-induced partitioning of spin lattice into magnetic fragments is supported by the anisotropic magnetization plateaus of Ising magnets and by the highly anisotropic width of the 1/3-magnetization plateau in azurite. The answers to the three questions (a) - (c) emerge naturally by analyzing how these fragments are formed under magnetic field. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_19529 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Magnetization Plateaus by the Field-Induced Partitioning of Spin Lattices Whangbo, Myung-Hwan Koo, Hyun-Joo Kremer, Reinhard K. Vasiliev, Alexander N. Materials Science Strongly Correlated Electrons 81 A.1; B.0; C.0 To search for a conceptual picture describing the magnetization plateau phenomenon, we surveyed the crystal structures and the spin lattices of those magnets exhibiting plateaus in their magnetization vs. magnetic field curves by probing the three questions: (a) why only certain magnets exhibit magnetization plateaus, (b) why there occur several different types of magnetization plateaus, and (c) what controls the widths of magnetization plateaus. We show that the answers to these questions lie in how the magnets under field absorb Zeeman energy hence changing their magnetic structures. The magnetic structure of a magnet insulator is commonly described in terms of its spin lattice, which requires the determination of the spin exchanges nonnegligible strengths between the magnetic ions. Our work strongly suggests that a magnet under magnetic field partitions its spin lattice into antiferromagnetic (AFM) or ferrimagnetic fragments by breaking its weak magnetic bonds. Our supposition of the field-induced partitioning of spin lattice into magnetic fragments is supported by the anisotropic magnetization plateaus of Ising magnets and by the highly anisotropic width of the 1/3-magnetization plateau in azurite. The answers to the three questions (a) - (c) emerge naturally by analyzing how these fragments are formed under magnetic field. |
| title | Magnetization Plateaus by the Field-Induced Partitioning of Spin Lattices |
| topic | Materials Science Strongly Correlated Electrons 81 A.1; B.0; C.0 |
| url | https://arxiv.org/abs/2409.19529 |