Volume 114, Number 1, April 2016
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||21 April 2016|
Investigation of magnetic phases in parent compounds of iron-chalcogenides via quasiparticle scattering interference
1 Asia Pacific Center for Theoretical Physics (APCTP) - Pohang, Gyeongbuk, 790-784, Korea
2 Department of Physics, POSTECH - Pohang, Gyeongbuk 790-784, Korea
3 Max Planck POSTECH Center for Complex Phase Materials, POSTECH - Pohang 790-784, Korea
4 Institut für Theoretische Physik III, Ruhr-Universität Bochum - 44801 Bochum, Germany
5 National University of Science and Technology “MISiS” - 119049 Moscow, Russian Federation
Received: 10 March 2016
Accepted: 6 April 2016
We employ a five-orbital tight-binding model to develop the mean-field solution for various possible spin density wave states in the iron-chalcogenides. The quasiparticle interference (QPI) technique is applied to detect signatures of these states due to scatterings arising from non-magnetic impurities. Apart from the experimentally observed double-striped structure with ordering vector , the QPI method is investigated for the extended-stripe as well as the orthogonal double-stripe phase. We discuss QPI as a possible tool to detect and classify various magnetic structures with different electronic structure reconstruction within the framework of the compound.
PACS: 74.70.Xa – Pnictides and chalcogenides / 75.30.Fv – Spin-density waves / 75.10.Lp – Band and itinerant models
© EPLA, 2016
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