Magnetism and magnetoelastic effect in the two-dimensional van der Waals multiferroic CuCrP 2 ⁢S 6

Guo, Jiasen [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000177081476); Siebenaller, Ryan P. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States); The Ohio State University, Columbus, OH (United States)] (ORCID:0009000726137119); Susner, Michael A. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States)] (ORCID:0000000212118749); Yan, Jiaqiang [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000166254706); Morgan, Zachary [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000243625911); Ye, Feng [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000174774648)

doi:10.1103/51ds-ph5b

DOE OSTI · 3384935

Magnetism and magnetoelastic effect in the two-dimensional van der Waals multiferroic CuCrP 2 ⁢S 6

Guo, Jiasen [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000177081476)·Siebenaller, Ryan P. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States); The Ohio State University, Columbus, OH (United States)] (ORCID:0009000726137119)·Susner, Michael A. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States)] (ORCID:0000000212118749)·Yan, Jiaqiang [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000166254706)·Morgan, Zachary [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000243625911)·Ye, Feng [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000174774648)

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Abstract

Here, we report a magnetic and neutron diffraction study on the ground state magnetism and field evolution of single-crystal van der Waals multiferroic CuCrP 2 ⁢S 6 . The ordered moments align along the 𝑏 axis in the "𝐴-type" antiferromagnetic configuration with a spin-flop transition along the same direction. Field application along 𝑎 introduces a smooth transition to a fully polarized ferromagnetic state via in-plane spin rotation. These findings resolve the ambiguity of the ground state magnetization direction in CuCrP 2 ⁢S 6 and uncover its field responses, providing a firm basis for future magnetoelectric study. A magnetoelastic coupling effect connecting the interlayer spacing and the magnetic order was further revealed, highlighting the out-of-plane strain as an effective control knob for tuning magnetism both in this system and in related van der Waals magnets.

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Guo, Jiasen [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000177081476), Siebenaller, Ryan P. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States); The Ohio State University, Columbus, OH (United States)] (ORCID:0009000726137119), Susner, Michael A. [Air Force Research Laboratory (AFRL), Wright-Patterson AFB, OH (United States)] (ORCID:0000000212118749), Yan, Jiaqiang [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000166254706), Morgan, Zachary [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000243625911), Ye, Feng [Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)] (ORCID:0000000174774648). 2026-07-01. Magnetism and magnetoelastic effect in the two-dimensional van der Waals multiferroic CuCrP 2 ⁢S 6. https://doi.org/10.1103/51ds-ph5b

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