Real-space observation of ergodicity transitions in artificial spin ice by Michael Saccone, Francesco Caravelli, Kevin Hofhuis, Scott Dhuey, Andreas Scholl, Cristiano Nisoli, Alan Farhan

“…Here, we demonstrate the direct real-space observation of ergodicity transitions in a vertex-frustrated artificial spin ice. Using synchrotron-based photoemission electron microscopy we record thermally-driven moment fluctuations as a function of temperature, allowing us to directly observe transitions between ergodicity-breaking dynamics to system freezing, standing in contrast to simple trends observed for the temperature-dependent vertex populations, all while the entropy features arise as a function of temperature. …”
Get full text

Publisher Correction: Real-space observation of ergodicity transitions in artificial spin ice by Michael Saccone, Francesco Caravelli, Kevin Hofhuis, Scott Dhuey, Andreas Scholl, Cristiano Nisoli, Alan Farhan

Get full text

Chiral switching and dynamic barrier reductions in artificial square ice by Naëmi Leo, Matteo Pancaldi, Sabri Koraltan, Pedro Villalba González, Claas Abert, Christoph Vogler, Florian Slanovc, Florian Bruckner, Paul Heistracher, Kevin Hofhuis, Matteo Menniti, Dieter Suess, Paolo Vavassori

“…Collective dynamics in lithographically-defined artificial spin ices offer profound insights into emergent correlations and phase transitions of geometrically-frustrated Ising spin systems. …”
Get full text