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Title:Orbital-dependent electron dynamics in Fe-pnictide superconductors
Authors:Adhikary, G. (Author)
Ressel, Barbara (Author)
Rebernik Ribič, Primož (Author)
Urbančič, Jurij (Author)
De Ninno, Giovanni (Author)
Krizmancic, Damjan (Author)
Thamizhavel, A. (Author)
Maiti, Kalobaran (Author)
Stupar, Matija (Author)
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:We report on orbital-dependent quasiparticle dynamics in EuFe 2 As 2, a parent compound of Fe-based superconductors, and a way to experimentally identify this behavior using time-and angle-resolved photoelectron spectroscopy across the spin density wave transition. We observe two different relaxation timescales for photoexcited d x z/d y z and d x y electrons. While the itinerant d x z/d y z electrons relax faster through the electron-electron scattering channel, d x y electrons form a quasiequilibrium state with the lattice due to their localized character, and the state decays slowly. Our findings suggest that electron correlation in Fe pnictides is an important property, which should carefully be taken into account when describing the electronic properties of both parent and carrier-doped compounds, and therefore establish a strong connection with cuprates
Keywords:photoelectron dynamics, Fe based superconductors
Year of publishing:2018
Number of pages:205142-2015150
Numbering:98, 20
COBISS_ID:5273339 Link is opened in a new window
URN:URN:SI:UNG:REP:JFPNMRSV
DOI:10.1103/PhysRevB.98.205142 Link is opened in a new window
License:CC BY-NC-ND 4.0
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International
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Record is a part of a journal

Title:Physical Review B
Shortened title:PRB
Publisher:American Physical Society
Year of publishing:2018

Secondary language

Language:English
Title:Orbital-dependent electron dynamics in Fe-pnictide superconductors
Abstract:We report on orbital-dependent quasiparticle dynamics in EuFe 2 As 2, a parent compound of Fe-based superconductors, and a way to experimentally identify this behavior using time-and angle-resolved photoelectron spectroscopy across the spin density wave transition. We observe two different relaxation timescales for photoexcited d x z/d y z and d x y electrons. While the itinerant d x z/d y z electrons relax faster through the electron-electron scattering channel, d x y electrons form a quasiequilibrium state with the lattice due to their localized character, and the state decays slowly. Our findings suggest that electron correlation in Fe pnictides is an important property, which should carefully be taken into account when describing the electronic properties of both parent and carrier-doped compounds, and therefore establish a strong connection with cuprates
Keywords:photoelectron dynamics, Fe based superconductors


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