Observation of Half-Quantum Vortices in Topological Superfluid 3He

Autti, S.; Dmitriev, V. V.; Mäkinen, J. T.; Soldatov, A. A.; Volovik, G. E.; Yudin, A. N.; Zavjalov, V. V.; Eltsov, V. B.

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Observation of Half-Quantum Vortices in Topological Superfluid 3He

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Title:	Observation of Half-Quantum Vortices in Topological Superfluid 3He
Author(s):	Autti, S. ; Dmitriev, V. V. ; Mäkinen, J. T. ; Soldatov, A. A. ; Volovik, G. E. ; Yudin, A. N. ; Zavjalov, V. V. ; Eltsov, V. B.
Date:	2016-12-14
Language:	en
Pages:	6 1-6
Department:	Department of Applied Physics Russian Academy of Sciences Moscow Institute of Physics and Technology
Series:	PHYSICAL REVIEW LETTERS, Volume 117, issue 25
ISSN:	0031-9007 1079-7114
DOI-number:	10.1103/PhysRevLett.117.255301
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Citation: Autti , S , Dmitriev , V V , Mäkinen , J T , Soldatov , A A , Volovik , G E , Yudin , A N , Zavjalov , V V & Eltsov , V B 2016 , ' Observation of Half-Quantum Vortices in Topological Superfluid 3He ' , Physical Review Letters , vol. 117 , no. 25 , 255301 , pp. 1-6 . https://doi.org/10.1103/PhysRevLett.117.255301
Abstract: 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.

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