ArticleNature physics2024
Controllable orbital angular momentum monopoles in chiral topological semimetals.
Article in Nature physics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Chirality-Induced Orbital Selectivity through Linear-Orbital Coupling.The journal of physical chemistry letters · 2026Article
- Symmetry-driven spin splitting in altermagnets: an angle-resolved photoemission spectroscopy perspective.Nano convergence · 2026Review
- A chiral fermionic valve driven by quantum geometry.Nature · 2026Article
- Tunable Octdong and Spindle-Torus Fermi Surfaces in Kramers Nodal Line Metals.Nature communications · 2025Article
- Floquet-Bloch valleytronics.Nature communications · 2025Article
- Orbital Topology of Chiral Crystals for Orbitronics.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Weyl spin-momentum locking in a chiral topological semimetal.Nature communications · 2024Article
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Authors and funding
18 authors.
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Abstract
The emerging field of orbitronics aims to generate and control orbital angular momentum for information processing. Chiral crystals are promising orbitronic materials because they have been predicted to host monopole-like orbital textures, where the orbital angular momentum aligns isotropically with the electron's crystal momentum. However, such monopoles have not yet been directly observed in chiral crystals. Here, we use circular dichroism in angle-resolved photoelectron spectroscopy to image orbital angular momentum monopoles in the chiral topological semimetals PtGa and PdGa. The spectra show a robust polar texture that rotates around the monopole as a function of photon energy. This is a direct consequence of the underlying magnetic orbital texture and can be understood from the interference of local atomic contributions. Moreover, we also demonstrate that the polarity of the monopoles can be controlled through the structural handedness of the host crystal by imaging orbital angular moment monopoles and antimonopoles in the two enantiomers of PdGa, respectively. Our results highlight the potential of chiral crystals for orbitronic device applications, and our methodology could enable the discovery of even more complicated nodal orbital angular momentum textures that could be exploited for orbitronics.
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