Observation of Half-Quantum Vortices in Topological Superfluid 3He
Finna-arvio
Observation of Half-Quantum Vortices in Topological Superfluid 3He
One of the most sought-after objects in topological quantum-matter systems is a vortex carrying half a quantum of circulation. They were originally predicted to exist in superfluid He3−A but have never been resolved there. Here we report an observation of half-quantum vortices (HQVs) in the polar phase of superfluid He3. The vortices are created with rotation or by the Kibble-Zurek mechanism and identified based on their nuclear magnetic resonance signature. This discovery provides a pathway for studies of unpaired Majorana modes bound to the HQV cores in the polar-distorted A phase.
Tallennettuna:
Kieli |
englanti |
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Sarja | PHYSICAL REVIEW LETTERS |
ISSN |
0031-9007 1079-7114 |
DOI | 10.1103/PhysRevLett.117.255301 |