S
S. Autti
Researcher at Lancaster University
Publications - 29
Citations - 617
S. Autti is an academic researcher from Lancaster University. The author has contributed to research in topics: Superfluidity & Magnon. The author has an hindex of 11, co-authored 25 publications receiving 484 citations. Previous affiliations of S. Autti include Aalto University.
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Journal ArticleDOI
Observation of a Time Quasicrystal and Its Transition to a Superfluid Time Crystal.
TL;DR: Experimental realization of a quantum time quasicrystal and its transformation to a quantumTime crystal, and Bose-Einstein condensation of magnons, associated with coherent spin precession, created in a flexible trap in superfluid He-B.
Journal ArticleDOI
Observation of Half-Quantum Vortices in Topological Superfluid ^{3}He.
S. Autti,Vladimir V. Dmitriev,J. T. Mäkinen,A. A. Soldatov,Grigory Volovik,Grigory Volovik,A. N. Yudin,V. V. Zavjalov,Vladimir Eltsov +8 more
TL;DR: An observation of half-quantum vortices (HQVs) in the polar phase of superfluid ^{3}He-A, providing a pathway for studies of unpaired Majorana modes bound to the HQV cores in the Polar-distorted A phase.
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Self-Trapping of Magnon Bose-Einstein Condensates in the Ground State and on Excited Levels: From Harmonic to Box Confinement
S. Autti,Yu. M. Bunkov,Vladimir Eltsov,Pekka Heikkinen,J. J. Hosio,P. Hunger,Matti Krusius,Grigory Volovik,Grigory Volovik +8 more
TL;DR: This is the first experimental example of Bose condensation in a box and the orbital texture reorients under the influence of the spin-orbit interaction and the profile of the trap gradually changes from harmonic to a square well, with walls almost impenetrable to magnons.
Journal ArticleDOI
AC Josephson effect between two superfluid time crystals
S. Autti,S. Autti,Pekka Heikkinen,Pekka Heikkinen,J. T. Mäkinen,J. T. Mäkinen,Grigori Volovik,Grigori Volovik,V. V. Zavjalov,V. V. Zavjalov,Vladimir Eltsov +10 more
TL;DR: In this paper, two adjacent quantum time crystals implemented by two magnon condensates in the superfluid B-phase of helium-3 are observed to coherently exchange magnons as a manifestation of the AC Josephson effect.
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Light Higgs channel of the resonant decay of magnon condensate in superfluid (3)He-B.
TL;DR: Formation of a light Higgs from a Nambu-Goldstone mode observed in 3He-B opens a possibility that such scenario can be realized in other systems, where violation of some hidden symmetry is possible, including the Standard Model.