5 papers
Spurious Symmetry Enhancement and Interaction-Induced Topology in Magnons
Matthias Gohlke, Alberto Corticelli, Roderich Moessner +2
Linear spin wave theory (LSWT) is the standard technique to compute the spectra of magnetic excitations in quantum materials. In this paper, we show that LSWT, even under ordinary…
Generic Field-Driven Phenomena in Kitaev Spin Liquids: Canted Magnetism and Proximate Spin Liquid Physics
Ciarán Hickey, Matthias Gohlke, Christoph Berke +1
Topological spin liquids in two spatial dimensions are stable phases in the presence of a small magnetic field, but may give way to field-induced phenomena at intermediate field st…
Emergence of a nematic paramagnet via quantum order-by-disorder and pseudo-Goldstone modes in Kitaev magnets
Matthias Gohlke, Li Ern Chern, Hae-Young Kee +1
The appearance of nontrivial phases in Kitaev materials exposed to an external magnetic field has recently been a subject of intensive studies. Here, we elucidate the relation betw…
Polarization Plateaus in Hexagonal Water Ice
Matthias Gohlke, Roderich Moessner, Frank Pollmann
The protons in water ice are subject to so called \emph{ice rules} resulting in an extensive ground state degeneracy. We study how an external electric field reduces this ground st…
Dynamical and Topological Properties of the Kitaev Model in a [111] Magnetic Field
Matthias Gohlke, Roderich Moessner, Frank Pollmann
The Kitaev model exhibits a Quantum Spin Liquid hosting emergent fractionalized excitations. We study the Kitaev model on the honeycomb lattice coupled to a magnetic field along th…