20.500.12556/RUNG-4254-696ac5e8-2dc8-041e-77c4-8e1a58d8aaed
Orbital-dependent electron dynamics in Fe-pnictide superconductors
Orbital-dependent electron dynamics in Fe-pnictide superconductors
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
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
photoelectron dynamics
Fe based superconductors
photoelectron dynamics
Fe based superconductors
true
true
false
Angleški jezik
Angleški jezik
Delo ni kategorizirano
2018-11-29 01:53:29
2018-11-29 03:50:48
2023-06-09 03:27:23
0000-00-00 00:00:00
2018
0
0
205142-2015150
98
20
2018
0000-00-00
Zaloznikova
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
5273339
10.1103/PhysRevB.98.205142
URN:SI:UNG:REP:JFPNMRSV
Univerza v Novi Gorici
0
1
0