magnetoARPES: Angle Resolved Photoemission Spectroscopy in the presence of a magnetic field.

ORAL

Abstract

Angle-resolved photoemission spectroscopy (ARPES) is a crucial technique for studying electronic excitations in materials, revealing their single-particle spectral function. However, ARPES in a magnetic field has been challenging due to the deflection of the photoelectrons. We introduce "magnetoARPES," a variant that enables ARPES in the presence of a magnetic field. The magnetoARPES is achieved by using a microscopic probe beam on a thinned sample with a specialized sample holder generating a confined magnetic field up to ~ 100 mT at the surface of the sample. We present experimental and simulated data on graphene to explore how the magnetic field induces aberrations. The ability to perform ARPES in the presence of a magnetic field expands the scope of experiments and opens up new research opportunities, and would help understanding phenomena related to magnetism, superconductivity, and other magnetic effects in materials.

* This material is based upon work at the QSA, supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers. This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231.

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Publication: Published, magnetoARPES: Angle Resolved Photoemission Spectroscopy with magnetic field control, https://doi.org/10.1016/j.elspec.2023.147357

Presenters

  • Sae Hee Ryu

    Lawrence Berkeley National Laboratory

Authors

  • Sae Hee Ryu

    Lawrence Berkeley National Laboratory

  • Garett D Reichenbach

    Lawrence Berkeley National Laboratory, University of Arizona

  • Christopher Jozwiak

    Lawrence Berkeley National Lab, Lawrence Berkeley National Laboratory, Berkeley National Lab, Advanced Light Source, The Advanced Light Source, Lawrence Berkeley National Laboratory, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Aaron Bostwick

    Lawrence Berkeley National Lab, Lawrence Berkeley National Laboratory, Berkeley National Lab, Advanced Light Source, The Advanced Light Source, Lawrence Berkeley National Laboratory, Advanced Light Source, Lawrence Berkeley National Laboratory

  • Peter Richter

    Chemnitz University of Technology

  • Thomas Seyller

    Chemnitz University of Technology

  • Eli Rotenberg

    Lawrence Berkeley National Laboratory