Can quantum skyrmions be observed in a real magnet? · revision history

Revision 2

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Title
Can quantum skyrmions be observed in a real magnet?
Plain
When a skyrmion is only a few atoms wide and made of small spins, quantum mechanics should matter, letting it tunnel or form superpositions. No experiment has yet shown a skyrmion behaving quantum mechanically.
Precise · changed · core
Revision 1: In a frustrated or chiral magnet with $S=1/2\ \text{or}\ 1$ local moments and skyrmion radius of a few lattice spacings, detect a quantum signature: macroscopic quantum tunneling of skyrmion number or position (a temperature-independent switching rate below a crossover T*), or quantized internal modes inconsistent with classical spin dynamics. An answer is an identified system and measurement giving T* and the rate.
Revision 2: In a frustrated or chiral magnet with $S=1/2\ \text{or}\ 1$ local moments and skyrmion radius of a few lattice spacings, detect a quantum signature: macroscopic quantum tunneling of skyrmion number or position (a temperature-independent switching rate below a crossover $T*$), or quantized internal modes inconsistent with classical spin dynamics. An answer is an identified system and measurement giving $T*$ and the rate.
Settled by · changed · core
Revision 1: Low-temperature single-skyrmion switching or spectroscopy showing a temperature-independent rate below T*, compared with quantum many-body calculations.
Revision 2: Low-temperature single-skyrmion switching or spectroscopy showing a temperature-independent rate below $T*$, compared with quantum many-body calculations.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
open
Status note
(empty)
Posed since
(empty)

Decisions