2 papers
cond-mat.str-el2021
Two-triplon excitations of the Kitaev-Heisenberg-Bilayer
Erik Wagner, Wolfram Brenig
We study the spectrum of a bilayer of Kitaev magnets on the honeycomb lattice, coupled by Heisenberg exchange in the quantum-dimer phase at strong interlayer coupling. Using the pe…
cond-mat.str-el2018
Bilayer Kitaev models: Phase diagrams and novel phases
Urban F. P. Seifert, Julian Gritsch, Erik Wagner +4
Kitaev's honeycomb-lattice spin- model has become a paradigmatic example for quantum spin liquids, both gapped and gapless. Here we study the fate of these spin…