Observation of Half-Quantum Vortices in Topological Superfluid 3He

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

doi:10.1103/PhysRevLett.117.255301

Observation of Half-Quantum Vortices in Topological Superfluid 3He

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

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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.

Original language	English
Article number	255301
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review Letters
Volume	117
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.117.255301
Publication status	Published - 14 Dec 2016
MoE publication type	A1 Journal article-refereed

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2 Finished

Low Temperature Physics
Tuoriniemi, J.
17/02/2016 → 28/02/2018
Project: Academy of Finland: Other research funding
Centre of Excellence in Low Temperature Quantum Phenomena and Devices
Eltsov, V., Volovik, G., Hietala, N., Rysti, J. & Mäkinen, J.
01/01/2015 → 31/01/2018
Project: Academy of Finland: Other research funding

OtaNano
Anna Rissanen (Manager)
Aalto University
Facility/equipment: Facility
OtaNano – Low Temperature Laboratory
Pertti Hakonen (Manager)
Department of Applied Physics
Facility/equipment: Facility

Cite this

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title = "Observation of Half-Quantum Vortices in Topological Superfluid 3He",

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.",

author = "S. Autti and Dmitriev, {V. V.} and M{\"a}kinen, {J. T.} and Soldatov, {A. A.} and Volovik, {G. E.} and Yudin, {A. N.} and Zavjalov, {V. V.} and Eltsov, {V. B.}",

year = "2016",

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doi = "10.1103/PhysRevLett.117.255301",

language = "English",

volume = "117",

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T1 - Observation of Half-Quantum Vortices in Topological Superfluid 3He

AU - Autti, S.

AU - Dmitriev, V. V.

AU - Mäkinen, J. T.

AU - Soldatov, A. A.

AU - Volovik, G. E.

AU - Yudin, A. N.

AU - Zavjalov, V. V.

AU - Eltsov, V. B.

PY - 2016/12/14

Y1 - 2016/12/14

N2 - 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.

AB - 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.

UR - https://arxiv.org/abs/1508.02197

U2 - 10.1103/PhysRevLett.117.255301

DO - 10.1103/PhysRevLett.117.255301

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EP - 6

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 25

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ER -

Observation of Half-Quantum Vortices in Topological Superfluid 3He

Abstract

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Low Temperature Physics

Centre of Excellence in Low Temperature Quantum Phenomena and Devices

OtaNano

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