- By:
- McKay, S.; Parnell, Steven; Dalgliesh, Marilyn J; Lavrik, Nickolay V; Kravchenko, Ivan I; Thien, Q; Baxter, D; Ortiz, Gerardo; Pynn, Roger
- Journal Name:
- Physical Review Research
- Page Number:
- 23199
- Volume:
- 8
- Issue Number:
- 2
- Publication Date:
- June 4, 2026
- View DOI Listing:
- https://doi.org/10.1103/prnf-wtjp
Abstract
Beams of light or matter that carry well-defined states of orbital angular momentum (OAM) are promising probes of topological and textured condensed matter systems such as magnetic skyrmions. Using spin-echo small-angle neutron scattering, a phase-sensitive technique that allows for a relatively low intensity beam, we demonstrate the production of vortex neutron beams from forked phase gratings of various topological charges. This type of interferometric verification of OAM we present here could be further extended to other platforms using probes that are similarly limited by the coherence and strength of the currently available sources.
