Electronic Structure of NaFeAs Superconductor: LDA + DMFT Calculations Compared with ARPES Experiment
| Autor: | M. V. Sadovskii, N. S. Pavlov, I. A. Nekrasov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Superconductivity
Physics High-temperature superconductivity Condensed matter physics Fermi level Angle-resolved photoemission spectroscopy 02 engineering and technology Electronic structure 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials law.invention Renormalization symbols.namesake Quality (physics) Atomic orbital law Quantum mechanics 0103 physical sciences symbols Condensed Matter::Strongly Correlated Electrons 010306 general physics 0210 nano-technology |
| Zdroj: | Journal of Superconductivity and Novel Magnetism. 29:1117-1122 |
| ISSN: | 1557-1947 1557-1939 |
| DOI: | 10.1007/s10948-016-3377-6 |
| Popis: | In this work, we present a theoretical explanation of the recent high quality angle-resolved photoemission (ARPES) experiments on a new iron-pnictide high temperature superconductor NaFeAs (Evtushinsky arXiv: 1409.1537 ). Well known and rather universal manifestation of correlation effects in iron-pnictides is the renormalization of conducting bands near the Fermi level. Most suitable theoretical technique to describe this effect is LDA + DMFT. Our LDA + DMFT calculations demonstrate that for NaFeAs the mass renormalization by the factor of the order of 3, in good agreement with ARPES experiments, can be achieved, taking into account only correlations on Fe-3d orbitals. No additional interactions with “bosonic” modes, as proposed in Evtushinsky (arXiv: 1409.1537 ), are necessary to describe the experimental data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink