Emergence of vortex state in the S=1 Kitaev-Heisenberg model with single-ion anisotropy

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Ayushi Singhania - , Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Okinawa Institute of Science and Technology Graduate University (Autor:in)
  • Jeroen Van Den Brink - , Professur für Festkörpertheorie (gB/IFW), Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Technische Universität Dresden (Autor:in)
  • Satoshi Nishimoto - , Professur für Experimentelle Festkörperphysik (gB/IFW), Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden, Technische Universität Dresden (Autor:in)

Abstract

The search for Kitaev spin liquid states has recently broadened to include a number of honeycomb materials with integer spin moments. The qualitative difference with their spin-1/2 counterparts is the presence of single-ion anisotropy (SIA). This motivates our investigation of the effects of SIA on the ground state of the spin-1 Kitaev-Heisenberg (KH) model using the density-matrix renormalization group which allows construction of detailed phase diagrams around the Kitaev points. We demonstrate that positive out-of-plane SIA induces an in-plane vortex state without the need for off-diagonal interactions. Conversely, negative SIA facilitates the emergence of a ferromagnetic state in the presence of antiferromagnetic Heisenberg interactions, whereas a Néel state can emerge for ferromagnetic Heisenberg coupling. These findings, pertinent even for weak SIA, not only enhance our theoretical understanding of the spin-1 KH model but also suggest experimental prospects for observing these novel magnetic states in material realizations.

Details

OriginalspracheEnglisch
Aufsatznummer033146
FachzeitschriftPhysical Review Research
Jahrgang6
Ausgabenummer3
PublikationsstatusVeröffentlicht - Juni 2024
Peer-Review-StatusJa

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