Vison Crystals in an Extended Kitaev Model on the Honeycomb Lattice

We introduce an extension of the Kitaev honeycomb model by including four-spin interactions that preserve the local gauge structure and, hence, the integrability of the original model. The extended model has a rich phase diagram containing five distinct vison crystals, as well as a symmetric π-flux spin liquid with a Fermi surface of Majorana fermions and a sequence of Lifshitz transitions. We discuss possible experimental signatures and, in particular, present finite-temperature Monte Carlo calculations of the specific heat and the static vison structure factor. We argue that our extended model emerges naturally from generic perturbations to the Kitaev honeycomb model.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:123

Enthalten in:

Physical review letters - 123(2019), 5 vom: 02. Aug., Seite 057201

Sprache:

Englisch

Beteiligte Personen:

Zhang, Shang-Shun [VerfasserIn]
Wang, Zhentao [VerfasserIn]
Halász, Gábor B [VerfasserIn]
Batista, Cristian D [VerfasserIn]

Links:

Volltext

Themen:

Journal Article

Anmerkungen:

Date Completed 11.09.2019

Date Revised 11.09.2019

published: Print

Citation Status PubMed-not-MEDLINE

doi:

10.1103/PhysRevLett.123.057201

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM301002363