Magnon bound states versus anyonic Majorana excitations in the Kitaev honeycomb magnet $\alpha$-RuCl$_{3}$

Dirk Wulferding , Youngsu Choi , Seung-Hwan Do , Chan Hyeon Lee , Peter Lemmens , Clément Faugeras (1, 2) , Yann Gallais (3) , Kwang-Yong Choi

1 LNCMI-G - Laboratoire national des champs magnétiques intenses - Grenoble
2 LNCMI-T - Laboratoire national des champs magnétiques intenses - Toulouse
3 MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques

α-RuCl$_{3}$ has properties consistent with predictions of a phase hosting fractionalized Majorana fermions but that could also be explained by conventional magnetic excitations. Here the authors find evidence for fractionalized quasiparticles by studying magnetic excitations across the field-temperature phase diagram.

Domaines: Physique Générale [physics.gen-ph]

Dirk Wulferding, Youngsu Choi, Seung-Hwan Do, Chan Hyeon Lee, Peter Lemmens, et al.. Magnon bound states versus anyonic Majorana excitations in the Kitaev honeycomb magnet $\alpha$-RuCl$_{3}$. Nature Communications, 2020, 11 (1), pp.1603. ⟨10.1038/s41467-020-15370-1⟩. ⟨hal-03026197⟩