Pregled bibliografske jedinice broj: 418996
Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides
Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides // Physical Review B - Condensed Matter and Materials Physics, 81 (2010), 100512(R)-1 doi:10.1103/PhysRevB.81.100512 (međunarodna recenzija, članak, znanstveni)
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Naslov
Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides
Autori
Wu, D. ; Barišić, Neven ; Kalina, P. ; Faridian, A. ; Gorshunov, B. ; Drichko, N. ; Li, L.J. ; Lin, X. ; Cao, G.H. ; Xu, Z.A. ; Wang, N.L. ; Dressel, M.
Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 81
(2010);
100512(R)-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
PACS numbers: 74.25.Gz; 74.25.Jb; 75.30.Fv
Sažetak
Infrared reflectivity measurements on several 122 iron pnictides reveal the existence of two electronic subsystems. The one gapped due to the spin-density-wave transition in the parent materials, such as EuFe2As2, is responsible for superconductivity in the doped compounds, such as BaFe0.92Co0.082As2 and BaFe0.95Ni0.052As2. Analyzing the dc resistivity and scattering rate of this contribution, a hidden T2 dependence is found in the normal state. The second subsystem gives rise to incoherent background, present in all 122 compounds, which is basically temperature independent but affected by the superconducting transition.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
