Issue |
EPL
Volume 112, Number 2, October 2015
|
|
---|---|---|
Article Number | 27004 | |
Number of page(s) | 6 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/112/27004 | |
Published online | 05 November 2015 |
Orbital-lattice coupling and orbital-ordering instability in iron pnictides
Department of Physics, Hanyang University - 17 Haengdang, Seongdong, Seoul 133-791, Korea
Received: 2 June 2015
Accepted: 14 October 2015
Orbital-ordering instability arising due to the intrapocket nesting is investigated for the tight-binding models of pnictides in the presence of orbital-lattice coupling. The incommensurate instabilities with small momentum, which may play an important role in the nematic-ordering transition, vary from model to model besides being more favorable in comparison to the spin-density wave instability in the absence of good interpocket nesting. We also examine the doping dependence of such instabilities. The electron-phonon coupling parameters required to induce them are compared with the first-principle calculations.
PACS: 74.70.Xa – Pnictides and chalcogenides / 74.25.Jb – Electronic structure (photoemission, etc.) / 75.25.Dk – Orbital, charge, and other orders, including coupling of these orders
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.