Antiferromagnetic topological insulator state in the correlated Bernevig-Hughes-Zhang model

S. Miyakoshi and Y. Ohta
Phys. Rev. B 87, 195133 – Published 28 May 2013

Abstract

We study the effects of electron correlations on the topological phase transition in the Bernevig-Hughes-Zhang model using the variational cluster approach, in which the short-range spatial correlations are taken into account exactly. We calculate the spin Chern number and local magnetic moment to show that the topologically nontrivial antiferromagnetic order exists and that the magnetic transition is of the second order. We furthermore demonstrate that under the spin-quantized condition the topological phase transition is caused by the closing of the bulk band gap.

  • Received 15 March 2013

DOI:https://doi.org/10.1103/PhysRevB.87.195133

©2013 American Physical Society

Authors & Affiliations

S. Miyakoshi and Y. Ohta

  • Department of Physics, Chiba University, Chiba 263-8522, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 87, Iss. 19 — 15 May 2013

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×