Stripe charge density wave in a van der Waals antiferromagnet

ORAL

Abstract

Correlation-driven stripe charge order in doped antiferromagnets has been proposed as a crucial concept in understanding the mechanism of high-temperature superconductors. In a newly emerged van der Waals antiferromagnet U-base tellurides, we discovered a robust stripe charge density wave (CDW) phase that persists above room temperature. Scanning tunneling microscopy and spectroscopy reveal “flat bands” near the Fermi level, indicating strong electron correlation in this system. Electron microscopy demonstrates the presence of coherent CDW and CDW domains on a macroscopic scale. This CDW manifests as significant anisotropic transport behavior over a wide range of temperatures, suggesting potential future device applications. Our study establishes this new U-based telluride as a promising platform for investigating the interplay between electron correlation, stripe charge order, and magnetism.

*This work was supported by Harvard Quantum Initiative (HQI).

–

Presenters

  • Mengke Liu

    • Harvard University

Authors

  • Mengke Liu

    • Harvard University

  • Yu Liu

    • Harvard University

  • Sougata Mardanya

    • Howard University
    • Howard university

  • Thao H Dinh

    • Harvard University
    • Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology

  • Junyeong Ahn

    • Harvard University

  • Christopher Broyles

    • Washington University in St. Louis

  • Gadeer Alqasseri

    • Howard University

  • Austin Akey

    • Center for Nanoscale Systems
    • Harvard University

  • Jonanthan D Denlinger

    • Lawrence Berkeley National Laboratory
    • Lawrence Berkeley National Lab

  • Ashvin Vishwanath

    • Harvard University

  • Philip Kim

    • Harvard University

  • Suyang Xu

    • Harvard University

  • Sugata Chowdhury

    • Howard University

  • Sheng Ran

    • Washington University in St. Louis

  • Jennifer E Hoffman

    • Harvard University