Zero-field magnetic ground state of EuMg2Bi2
| Autor: | Benjamin G. Ueland, Robert J. McQueeney, David C. Johnston, Santanu Pakhira, Thomas Heitmann, Simon Riberolles, David Vaknin |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Condensed Matter - Materials Science Condensed matter physics Plane (geometry) Dirac (video compression format) Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Magnetic susceptibility Semimetal Zero field Ferromagnetism 0103 physical sciences Antiferromagnetism Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology Ground state |
| Zdroj: | Physical Review B. 103 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.103.024408 |
| Popis: | Layered trigonal ${\mathrm{EuMg}}_{2}{\mathrm{Bi}}_{2}$ is reported to be a topological semimetal that hosts multiple Dirac points that may be gapped or split by the onset of magnetic order. Here, we report zero-field single-crystal neutron-diffraction and bulk magnetic susceptibility measurements versus temperature $\ensuremath{\chi}(T)$ of ${\mathrm{EuMg}}_{2}{\mathrm{Bi}}_{2}$ that show the intraplane ordering is ferromagnetic (${\mathrm{Eu}}^{2+},\phantom{\rule{0.16em}{0ex}}S=7/2$) with the moments aligned in the $ab$ plane while adjacent layers are aligned antiferromagnetically (i.e., A-type antiferromagnetism) below the N\'eel temperature. |
| Databáze: | OpenAIRE |
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