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DOE OSTI · 1983426

Pressure-controlled magnetism in 2D molecular layers

Huang, Yulong (ORCID:0000000296160134)·Pathak, Arjun K. (ORCID:0000000306907300)·Tsai, Jeng-Yuan·Rumsey, Clayton (ORCID:0000000297615751)·Ivill, Mathew·Kramer, Noah·Hu, Yong·Trebbin, Martin (ORCID:0000000182785865)·Yan, Qimin (ORCID:0000000233770314)·Ren, Shenqiang (ORCID:0000000299873316)
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Abstract

Abstract Long-range magnetic ordering of two-dimensional crystals can be sensitive to interlayer coupling, enabling the effective control of interlayer magnetism towards voltage switching, spin filtering and transistor applications. With the discovery of two-dimensional atomically thin magnets, a good platform provides us to manipulate interlayer magnetism for the control of magnetic orders. However, a less-known family of two-dimensional magnets possesses a bottom-up assembled molecular lattice and metal-to-ligand intermolecular contacts, which lead to a combination of large magnetic anisotropy and spin-delocalization. Here, we report the pressure-controlled interlayer magnetic coupling of molecular layered compounds via chromium-pyrazine coordination. Room-temperature long-range magnetic ordering exhibits pressure tuning with a coercivity coefficient up to 4 kOe/GPa, while pressure-controlled interlayer magnetism also presents a strong dependence on alkali metal stoichiometry and composition. Two-dimensional molecular interlayers provide a pathway towards pressure-controlled peculiar magnetism through charge redistribution and structural transformation.

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74 ATOMIC AND MOLECULAR PHYSICS

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Huang, Yulong (ORCID:0000000296160134), Pathak, Arjun K. (ORCID:0000000306907300), Tsai, Jeng-Yuan, Rumsey, Clayton (ORCID:0000000297615751), Ivill, Mathew, Kramer, Noah, Hu, Yong, Trebbin, Martin (ORCID:0000000182785865), Yan, Qimin (ORCID:0000000233770314), Ren, Shenqiang (ORCID:0000000299873316). 2023-06-02. Pressure-controlled magnetism in 2D molecular layers. https://doi.org/10.1038/s41467-023-38991-8

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