From Stoner to Local Moment Magnetism in Atomically Thin Cr2Te3

ORAL

Abstract

Here, we report a thickness-dependent ferromagnetism in epitaxially grown Cr2Te3 thin films and investigate the evolution of the underlying electronic structure by synergistic angle-resolved photoemission spectroscopy, scanning tunneling microscopy, x-ray absorption spectroscopy, and first-principle calculations. A conspicuous ferromagnetic transition from Stoner to Heisenberg-type is directly observed in the atomically thin limit, indicating that dimensionality is a powerful tuning knob to manipulate the novel properties of 2D magnetism. Our results establish atomically thin Cr2Te3 as an excellent platform to explore the dual nature of localized and itinerant ferromagnetism in 2D magnets.

* The work at Advanced Light Source, Lawrence Berkeley National Laboratory was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences under contract No. DE-AC02-05CH11231. The study at the SSRL/SLAC is supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under contract no. DE-AC02- 76SF00515. Parts of the theoretical calculations for this project were performed on the National Energy Research Scientific Computing Center (NERSC), a US Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231.

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Presenters

  • Yong Zhong

    Stanford University

Authors

  • Yong Zhong

    Stanford University

  • Cheng Peng

    SLAC, SLAC National Accelerator Laboratory, SLAC - National Accelerator Laboratory, SLAC National Laboratory

  • Jun-Sik Lee

    SLAC National Accelerator Laboratory

  • Sung-Kwan Mo

    Lawrence Berkeley National Laboratory

  • Thomas P Devereaux

    Stanford University

  • Zhi-Xun Shen

    Stanford University, stanford university