Core Concepts
This research paper introduces "plasmonic twistronics," a novel method for generating complex optical fields with unique topological features by twisting plasmonic skyrmion lattices.
Stats
The pump pulse used in the experiment has a center wavelength of 800 nm.
This excites long-range surface plasmons with a wavelength of 780 nm.
The experiment uses a femtosecond laser with an 80 MHz repetition rate.
The skyrmion bag was observed over a range of twist angles between 11.7 and 19.3° in simulations.
The experiment confirmed the existence of a skyrmion bag at a twist angle of 13.2°.
Skyrmion bags with 1, 7, 19, 37... skyrmions can be created when the center of rotation is at a skyrmion lattice site.
Skyrmion bags with 2, 3, 4, 10, 12, and 14 skyrmions can be created by changing the center of rotation.
Quotes
"Here, we introduce “plasmonic twistronics” that combines the tunability of moiré superlattices with the topology of skyrmion lattices to create optical fields with exotic topological features."
"Our introduction of plasmonic twistronics provides a new paradigm for generating structured light fields with complex local topology and applications in super-resolution microscopy."
"Plasmonic twistronics provides an avenue for creating electric field distributions with novel and robust topological configurations, with arbitrary large topological invariants – a longstanding goal in the budding field of topological light quasiparticles."