Perfect kagome-lattice antiferromagnets with J$_{eff}$ = 1/2: The Co$^{2+}$-analogs of copper minerals volborthite and vesignieite
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arXiv
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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2022
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| _version_ | 1866914824963751936 |
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| author | Haraguchi, Yuya Ohnoda, Takehiro Matsuo, Akira Kindo, Koichi Katori, Hiroko Aruga |
| author_facet | Haraguchi, Yuya Ohnoda, Takehiro Matsuo, Akira Kindo, Koichi Katori, Hiroko Aruga |
| contents | We report the synthesis, crystal structure, and magnetic properties of Co$^{2+}$ kagome magnets Co$_3$V$_2$O$_7$(OH)$_2$$\cdot$2H$_2$O and BaCo$_3$(VO$_4$)$_2$(OH)$_2$, which can be recognized as Co-analogues of the intensively researched quantum kagome magnet volborthite Cu$_3$V$_2$O$_7$(OH)$_2$$\cdot$2H$_2$O and vesignieite BaCu$_3$(VO$_4$)$_2$(OH)$_2$. For each compound, the ground state is seemingly A-type antiferromagnetic order. At low temperatures, applying a magnetic field causes a metamagnetic-like transition described by the transition in which antiferromagnetically-aligned canted moments change to ferromagnetically-aligned ones. These ground and field-induced states include a canted ferromagnetic component perpendicular to the kagome planes favored by Dzyaloshinskii-Moriya interactions. These magnetic properties are well characterized by the J$_{eff}$ = 1/2 physics. Our findings will be the first step toward clarifying the J$_{eff}$ = 1/2 kagome physics, which has been little studied experimentally or theoretically. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2212_03486 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Perfect kagome-lattice antiferromagnets with J$_{eff}$ = 1/2: The Co$^{2+}$-analogs of copper minerals volborthite and vesignieite Haraguchi, Yuya Ohnoda, Takehiro Matsuo, Akira Kindo, Koichi Katori, Hiroko Aruga Strongly Correlated Electrons Materials Science We report the synthesis, crystal structure, and magnetic properties of Co$^{2+}$ kagome magnets Co$_3$V$_2$O$_7$(OH)$_2$$\cdot$2H$_2$O and BaCo$_3$(VO$_4$)$_2$(OH)$_2$, which can be recognized as Co-analogues of the intensively researched quantum kagome magnet volborthite Cu$_3$V$_2$O$_7$(OH)$_2$$\cdot$2H$_2$O and vesignieite BaCu$_3$(VO$_4$)$_2$(OH)$_2$. For each compound, the ground state is seemingly A-type antiferromagnetic order. At low temperatures, applying a magnetic field causes a metamagnetic-like transition described by the transition in which antiferromagnetically-aligned canted moments change to ferromagnetically-aligned ones. These ground and field-induced states include a canted ferromagnetic component perpendicular to the kagome planes favored by Dzyaloshinskii-Moriya interactions. These magnetic properties are well characterized by the J$_{eff}$ = 1/2 physics. Our findings will be the first step toward clarifying the J$_{eff}$ = 1/2 kagome physics, which has been little studied experimentally or theoretically. |
| title | Perfect kagome-lattice antiferromagnets with J$_{eff}$ = 1/2: The Co$^{2+}$-analogs of copper minerals volborthite and vesignieite |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2212.03486 |