An Integrated Quantum Material Testbed with Multi-Resolution Photoemission Spectroscopy

Abstract

We present the development of a multi-resolution photoemission spectroscopy (MRPES) setup which probes quantum materials in energy, momentum, space, and time. This versatile setup integrates three light sources in one photoemission setup, and can conveniently switch between traditional angle-resolved photoemission spectroscopy (ARPES), time-resolved ARPES (trARPES), and micron-scale spatially resolved ARPES ($\mu$ARPES). It provides a first-time all-in-one solution to achieve an energy resolution $<4$ meV, a time resolution $<35$ fs, and a spatial resolution $\sim 10$ $\mu$m in photoemission spectroscopy. Remarkably, we obtain the shortest time resolution among the trARPES setups using solid-state nonlinear crystals for frequency upconversion. Furthermore, this MRPES setup is integrated with a shadow-mask assisted molecular beam epitaxy system, which transforms the traditional photoemission spectroscopy into a quantum device characterization instrument. We demonstrate the functionalities of this novel quantum material testbed using FeSe/SrTiO${}_3$ thin films and MnBi${}_4$Te${}_7$ magnetic topological insulators.

References in corpus (9)

• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Ultrafast Optical Excitation of a Persistent Surface-State Population in the Topological Insulator Bi2Se3
• Phase competition in trisected superconducting dome
• Tracking Cooper Pairs in a Cuprate Superconductor by Ultrafast Angle-Resolved Photoemission
• Time-resolved photoemission apparatus achieving sub-20-meV energy resolution and high stability
• Origins of electronic bands in antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Tuning time and energy resolution in time-resolved photoemission spectroscopy with nonlinear crystals
• A time- and angle-resolved photoemission spectroscopy with probe photon energy up to 6.7 eV
• Thickness-Dependent Coherent Phonon Frequency in Ultrathin FeSe/SrTiO${}_3$ Films

Cited by in corpus (9)

• Delicate Ferromagnetism in MnBi${}_6$Te${}_{10}$
• Advancing time- and angle-resolved photoemission spectroscopy: The role of ultrafast laser development
• Ferromagnetic MnBi4Te7 obtained with low concentration Sb doping: A promising platform for exploring topological quantum states
• Layer-by-layer disentanglement of Bloch states via frequency-domain photoemission
• Van der Waals engineering of ultrafast carrier dynamics in magnetic heterostructures
• Development of a Laser-based angle-resolved-photoemission spectrometer with sub-micrometer spatial resolution and high-efficiency spin detection
• Distinguishing Surface and Bulk Electromagnetism via Their Dynamics in an Intrinsic Magnetic Topological Insulator
• Preservation of Topological Surface States in Millimeter-Scale Transferred Membranes
• Spectroscopic evidence of intra-unit-cell charge redistribution in charge-neutral magnetic topological insulator Sb-doped MnBi6Te10