Strongly correlated ferromagnetism in NiTa<sub>4</sub>Se<sub>8</sub>

ORAL

Abstract

In this talk, I report on the growth and characterization of a novel weakly itinerant ferromagnet NiTa4Se8. Magnetometry measurements reveal the existence of complex magnetic order, potentially with multiple competing order parameters. Our transport and thermodynamic measurements, in combination with density functional theory (DFT) calculations, provide evidence for strong electronic correlations arising from a combination of spin fluctuations and flat-bands near the Fermi level. This material may serve as a useful platform for the study of weak itinerant magnetism, and the interplay of strong electronic correlations with complex magnetism more generally.

*This work was supported as part of the Center for Novel Pathways to Quantum Coherence in Materials, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science.

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Presenters

  • Nikola Maksimovic

    • University of California, Berkeley

Authors

  • Nikola Maksimovic

    • University of California, Berkeley

  • James G Analytis

    • University of California, Berkeley
    • University of California Berkeley

  • Fanghui Wan

    • University of California, Berkeley

  • Alex Liebman-Pelaez

    • University of California Berkeley

  • sarah a schwarz

    • University of California, Berkeley

  • Sylvia K Lewin

    • University of California, Berkeley

  • Daria Balatsky

    • Lawrence Berkeley National Laboratory

  • Na Hyun Jo

    • Lawrence Berkeley National Lab

  • Eli Rotenberg

    • Lawrence Berkeley National Laboratory

  • Gabriel Perko-Engel

    • University of California, Berkeley