We find what appear to be persistent
asymmetric structures in the scattering material at the location of the planet candidates, which could be responsible at least for parts of the signals measured with sparse - aperture masking.
Only certain materials have that skyrmion -
friendly asymmetric structure, limiting the possibilities for studying the quasiparticles or coaxing them to form under warmer conditions.
Those first magnetic skyrmions found by Pfleiderer and colleagues appeared spontaneously in crystals
with asymmetric structures that induce a twist between neighboring atoms.
Soon, physicists developed a way to artificially create
an asymmetric structure by depositing material in thin layers.
Due to
their asymmetric structure, the polymersomes release the breakdown products from one side only, propelling them in the opposite direction.
There is also wonderful detailing in
the asymmetric structure of the fireplace, the brickwork of the small stair, and the positioning of windows to capture framed views of the exterior.»