Coupling between spin, orbital, charge, and lattice degrees of freedom in transition-metal oxides produces a variety of electronic and magnetic phenomena of importance for future technologies. Here, we explore the electronic band structure of a (111)-oriented ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}{\mathrm{MnO}}_3$ thin film through soft x-ray angle-resolved photoemission spectroscopy (ARPES). The measurements agree with the electronic band structure calculated with density functional theory using the Hubbard $U$ correction. Furthermore, we probe the circular dichroism in ARPES and observe a pronounced momentum-resolved magnetic circular dichroism (MCD) in resonant photoemission from the Mn $L$ edge. The momentum distribution of the resonant MCD reproduces that of the Fermi surface, establishing resonant circular dichroism ARPES as a momentum-resolved probe of itinerant Bloch states, with implications for unconventional magnets such as altermagnets and $p$-wave magnets.

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• Crystal-field excitations
• Density of states
• Electrical conductivity
• Electron emission
• Electronic structure of atoms & molecules
• Fermi surface
• Growth
• Jahn-Teller effect
• Magnetism
• Spintronics
• First-principles calculations