Numerical study of the Kitaev-Heisenberg chain

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

We study the one-dimensional Kitaev-Heisenberg model as a possible realization of magnetic degrees of freedom of the K-intercalated honeycomb-lattice ruthenium trichloride α-RuCl3, denoted as K0.5RuClm. First, we discuss the possible charge ordering pattern in K0.5RuClm, where half of the j=[Formula presented] spins are replaced by nonmagnetic ions in the honeycomb layer. Next, we investigate the low-energy excitations of the 1D Kitaev-Heisenberg model by calculating the dynamical spin structure factor using the Lanczos exact-diagonalization method. In the vicinity of Kitaev limit, there exist two well-separated dispersions. The bandwidth of each dispersion depends on the Heisenberg and Kitaev terms. This result may be relevant to the low-lying magnetic excitations of K0.5RuClm.

Details

OriginalspracheEnglisch
Seiten (von - bis)461-463
Seitenumfang3
FachzeitschriftPhysica B: Condensed Matter
Jahrgang536
PublikationsstatusVeröffentlicht - 1 Mai 2018
Peer-Review-StatusJa

Schlagworte

Schlagwörter

  • K-intercalated RuCl3, Kitaev-Heisenberg chain, Lanczos method

Bibliotheksschlagworte