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IOP Publishing, Journal of Physics: Condensed Matter, 25(36), p. 255802, 2024

DOI: 10.1088/1361-648x/ad3473

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Robust magnetism and crystal structure in Dirac semimetal EuMnBi<sub>2</sub> under high pressure

This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Abstract Dirac materials offer exciting opportunities to explore low-energy carrier dynamics and novel physical phenomena, especially their interaction with magnetism. In this context, this work focuses on studies of pressure control on the magnetic state of EuMnBi2, a representative magnetic Dirac semimetal, through time-domain synchrotron Mössbauer spectroscopy in 151Eu. Contrary to the previous report that the antiferromagnetic order is suppressed by pressure above 4 GPa, we have observed robust magnetic order up to 33.1 GPa. Synchrotron-based x-ray diffraction experiment on a pure EuMnBi2 sample shows that the tetragonal crystal lattice remains stable up to at least 31.7 GPa.