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DOE OSTI · 3028215

Enhanced two-dimensional ferromagnetism in van der Waals β-UTe 3 monolayers

Thomas, Sean Michael [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000308894435)·Llacsahuanga Allcca, Andres E. [Purdue Univ., West Lafayette, IN (United States)] (ORCID:0000000304145613)·Simeth, Wolfgang Josef [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000198901816)·Kengle, Caitlin Sophia [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215259483)·Riedel, Zachary W. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000158485520)·Orlandi, Fabio [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:000000016333521X)·Khalyavin, Dmitry [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:0000000267247695)·Manuel, Pascal [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:0000000288456576)·Ronning, Filip [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000226797957)·Bauer, Eric Dietzgen [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000300171937)·Thompson, Joe David [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000018801157X)·Zhu, Jian-Xin [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000179913918)·Scheie, Allen Olaf [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000274505138)·Chen, Yong P. [Purdue Univ., West Lafayette, IN (United States); Aarhus Univ. (Denmark); Tohoku Univ., Sendai (Japan)] (ORCID:0000000273564179)·Rosa, Priscila F. S. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000023437548X)
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Abstract

The discovery of local-moment magnetism in van der Waals (vdW) semiconductors down to the single-layer limit has led to a paradigm shift in the understanding of two-dimensional (2D) magnets. The incorporation of strong electronic and magnetic correlations in 2D vdW metals remains a sought-after platform to enable control of emergent quantum phases and to achieve more theoretically tractable microscopic models of complex materials. To date, however, there is limited success in the discovery of such metallic vdW platforms, and f-electron monolayers remain out of reach. Here, we demonstrate that strongly correlated β–uranium tritelluride (β-UTe 3 ) can be exfoliated to the monolayer limit. Unexpectedly, β-UTe 3 remains ferromagnetic in this limit with an enhanced ordering temperature of 35 kelvin, a factor of two larger than its bulk counterpart. Our work establishes β-UTe 3 as a materials platform for investigating and modeling correlated behavior in the monolayer limit and opens numerous avenues for quantum control with, e.g., strain engineering.

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Thomas, Sean Michael [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000308894435), Llacsahuanga Allcca, Andres E. [Purdue Univ., West Lafayette, IN (United States)] (ORCID:0000000304145613), Simeth, Wolfgang Josef [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000198901816), Kengle, Caitlin Sophia [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000215259483), Riedel, Zachary W. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000158485520), Orlandi, Fabio [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:000000016333521X), Khalyavin, Dmitry [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:0000000267247695), Manuel, Pascal [Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Laboratory, ISIS Neutron Source] (ORCID:0000000288456576), Ronning, Filip [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000226797957), Bauer, Eric Dietzgen [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000300171937), Thompson, Joe David [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000018801157X), Zhu, Jian-Xin [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000179913918), Scheie, Allen Olaf [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000274505138), Chen, Yong P. [Purdue Univ., West Lafayette, IN (United States); Aarhus Univ. (Denmark); Tohoku Univ., Sendai (Japan)] (ORCID:0000000273564179), Rosa, Priscila F. S. [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:000000023437548X). 2026-03-25. Enhanced two-dimensional ferromagnetism in van der Waals β-UTe 3 monolayers. https://doi.org/10.1126/sciadv.aea6436

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