J
John H. Gaida
Researcher at University of Göttingen
Publications - 9
Citations - 168
John H. Gaida is an academic researcher from University of Göttingen. The author has contributed to research in topics: Vortex & Fourier transform. The author has an hindex of 5, co-authored 9 publications receiving 93 citations. Previous affiliations of John H. Gaida include Max Planck Society & Polytechnic University of Milan.
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Journal ArticleDOI
Observation of fluctuation-mediated picosecond nucleation of a topological phase
Felix Büttner,Bastian Pfau,Marie Böttcher,Michael Schneider,G. Mercurio,Christian M. Günther,Piet Hessing,Christopher Klose,Angela Wittmann,Kathinka Gerlinger,Lisa-Marie Kern,Christian Strüber,Clemens von Korff Schmising,Josefin Fuchs,Dieter Engel,Alexandra Churikova,Siying Huang,Daniel Suzuki,Ivan Lemesh,Mantao Huang,Lucas Caretta,David Weder,John H. Gaida,Marcel Möller,Tyler R. Harvey,Sergey Zayko,Kai Bagschik,Robert Carley,Laurent Mercadier,J. Schlappa,Alexander Yaroslavtsev,Loïc Le Guyarder,Natalia Gerasimova,A. Scherz,Carsten Deiter,Rafael Gort,David Hickin,Jun Zhu,Monica Turcato,David Lomidze,F. Erdinger,Andrea Castoldi,Andrea Castoldi,S. Maffessanti,M. Porro,Andrey Samartsev,Jairo Sinova,Claus Ropers,J.H. Mentink,Bertrand Dupé,Bertrand Dupé,Geoffrey S. D. Beach,Stefan Eisebitt +52 more
TL;DR: Atomistic simulations indicate that the fluctuation state largely reduces the topological energy barrier and thereby enables the observed rapid and homogeneous nucleation of the skyrmion phase, and suggest a path towards ultrafast topological switching in a wide variety of materials through intermediate fluctuating states.
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Few-nm tracking of magnetic vortex orbits and their decay with ultrafast Lorentz microscopy
TL;DR: In this paper, the current-driven gyration of a vortex core in a 2 ϵm-sized magnetic nanoisland was examined using an ultrafast transmission electron microscope.
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Few-nm tracking of current-driven magnetic vortex orbits using ultrafast Lorentz microscopy
TL;DR: In this paper, the authors used ultrafast Lorentz microscopy to study the rotational motion of a magnetic vortex core in a permalloy nanoisland, excited by sinusoidal radio-frequency currents.
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Time- and frequency-resolved fluorescence with a single TCSPC detector via a Fourier-transform approach.
Antonio Perri,John H. Gaida,Andrea Farina,Fabrizio Preda,Daniele Viola,Matteo Ballottari,Jürgen Hauer,Sandro De Silvestri,Cosimo D'Andrea,Giulio Cerullo,Dario Polli +10 more
TL;DR: A broadband single-pixel spectro-temporal fluorescence detector, combining time-correlated single photon counting (TCSPC) with Fourier transform (FT) spectroscopy, which shows a readily adjustable spectral resolution with inherently broad bandwidth coverage.
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Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence
TL;DR: In this paper, the authors investigated ultrafast sublattice pseudospin relaxation in graphene by means of polarization-resolved photoluminescence spectroscopy, and compared the results with microscopic Boltzmann simulations.