Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'504'928
Articles rated: 2609

25 April 2024

» arxiv » 1204.4471

Article overview

Na2IrO3 as a spin-orbit-assisted antiferromagnetic insulator with a 350 meV gap
R. Comin ; G. Levy ; B. Ludbrook ; Z.-H. Zhu ; C.N. Veenstra ; J.A. Rosen ; Yogesh Singh ; P. Gegenwart ; D. Stricker ; J.N. Hancock ; D. van der Marel ; I.S. Elfimov ; A. Damascelli ;
Date:	19 Apr 2012
Abstract:	We study Na2IrO3 by angle-resolved photoemission spectroscopy and in situ carrier doping via potassium deposition. From the K-induced chemical potential shift and the emergence of spectral weight across the insulating gap, together with complementary optical conductivity data, we estimate an optical gap Delta_eff=350 meV. By performing local-density approximation (LDA) band structure calculations, with the inclusion of spin-orbit coupling (SO) and Coulomb repulsion U, we determine that while the correct gap magnitude can only be reproduced by LDA+SO+U, the prodromes of an underlying insulating state are already found in LDA+SO. This challenges a simple Mott-Hubbard scenario, establishing Na2IrO3 as a spin-orbit-assisted antiferromagnetic insulator.
Source:	arXiv, 1204.4471
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap