English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Spin excitations and thermodynamics of the t-J model on the honeycomb lattice

MPS-Authors
/persons/resource/persons184853

Plakida,  Nikolay M.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)

1803.03140.pdf
(Preprint), 248KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Vladimirov, A. A., Ihle, D., & Plakida, N. M. (2018). Spin excitations and thermodynamics of the t-J model on the honeycomb lattice. European Physical Journal B, 91(8): 195. doi:10.1140/epjb/e2018-80712-x.


Cite as: https://hdl.handle.net/21.11116/0000-0002-5EFE-8
Abstract
We present a spin-rotation-invariant Green-function theory for the dynamic spin susceptibility in the spin-1/2 antiferromagnetic t-J Heisenberg model on the honeycomb lattice. Employing a generalized mean-field approximation for arbitrary temperatures and hole dopings, the electronic spectrum of excitations, the spin-excitation spectrum and thermodynamic quantities (two-spin correlation functions, staggered magnetization, magnetic susceptibility, correlation length) are calculated by solving a coupled system of self-consistency equations for the correlation functions. The temperature and doping dependence of the magnetic (uniform static) susceptibility is ascribed to antiferromagnetic short-range order. Our results on the doping dependencies of the magnetization and susceptibility are analyzed in comparison with previous results for the t-J model on the square lattice.