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Pregled bibliografske jedinice broj: 65341

Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals


Wu, D.; Barišić, Neven; Drichko, N.; Kaiser, S.; Faridian, A.; Dressel, M.; Jiang, S.; Ren, Z.; Li, L.J.; Cao, G.H. et al.
Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals // Physical Review B - Condensed Matter and Materials Physics, 79 (2009), 155103-1 doi:10.1103/PhysRevB.79.155103 (međunarodna recenzija, članak, znanstveni)


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Naslov
Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals

Autori
Wu, D. ; Barišić, Neven ; Drichko, N. ; Kaiser, S. ; Faridian, A. ; Dressel, M. ; Jiang, S. ; Ren, Z. ; Li, L.J. ; Cao, G.H. ; Xu, Z.A. ; Jeevan, H.S. ; Gegenwart, P.

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 79 (2009); 155103-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
EuFe2As2; optical conductivity

Sažetak
The magnetic, transport, and optical properties of EuFe2As2 single crystals have been investigated parallel and perpendicular to the ab plane. The anisotropy rho(c)/rho(ab)approximate to 8 depends only slightly on temperature. In both orientations, the spin-density-wave transition at T-SDW=189 K shows up as a considerable increase in the dc resistivity. Susceptibility measurements evidence the magnetic order of the Eu2+ moments at T-N=19 K with little influence on the electronic transport taking place in the FeAs layers. Polarization-dependent infrared spectroscopy reveals strongly anisotropic optical properties and yields a carrier density of only 4.2x10(21) cm(-3) and a bandmass of m(b)=2m(0). A sizeable Drude contribution is present at all temperatures and narrows upon cooling. Below T-SDW, the spin- density-wave gap develops in the in-plane optical conductivity ; no appreciable change is detected for the perpendicular polarization. Modifications in the phonon features are associated with changes in the electronic properties at T-SDW. The extended Drude analysis yields a linear behavior of the frequency-dependent scattering rate below T-SDW, indicating an interaction between the charge carriers and spin fluctuations in the spin- density-wave state

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Profili:

Avatar Url Neven Barišić (autor)

Citiraj ovu publikaciju

Wu, D.; Barišić, Neven; Drichko, N.; Kaiser, S.; Faridian, A.; Dressel, M.; Jiang, S.; Ren, Z.; Li, L.J.; Cao, G.H. et al.
Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals // Physical Review B - Condensed Matter and Materials Physics, 79 (2009), 155103-1 doi:10.1103/PhysRevB.79.155103 (međunarodna recenzija, članak, znanstveni)
Wu, D., Barišić, N., Drichko, N., Kaiser, S., Faridian, A., Dressel, M., Jiang, S., Ren, Z., Li, L. & Cao, G. (2009) Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals. Physical Review B - Condensed Matter and Materials Physics, 79, 155103-1 doi:10.1103/PhysRevB.79.155103.
@article{article, year = {2009}, pages = {155103-1-155103-10}, DOI = {10.1103/PhysRevB.79.155103}, keywords = {EuFe2As2, optical conductivity}, journal = {Physical Review B - Condensed Matter and Materials Physics}, doi = {10.1103/PhysRevB.79.155103}, volume = {79}, issn = {1098-0121}, title = {Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals}, keyword = {EuFe2As2, optical conductivity} }
@article{article, year = {2009}, pages = {155103-1-155103-10}, DOI = {10.1103/PhysRevB.79.155103}, keywords = {EuFe2As2, optical conductivity}, journal = {Physical Review B - Condensed Matter and Materials Physics}, doi = {10.1103/PhysRevB.79.155103}, volume = {79}, issn = {1098-0121}, title = {Effects of magnetic ordering on dynamical conductivity : Optical investigations of EuFe2As2 single crystals}, keyword = {EuFe2As2, optical conductivity} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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