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Pregled bibliografske jedinice broj: 436261

NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs


Paar, Dalibor; Grafe, H.-J.; Lang, G.; Hammerath, F.; Manthey, K.; Behr, G.; Werner, J.; Büchner, B.
NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs // Physica. C, Superconductivity, 470 (2010), S1; S468-S469 doi:10.1016/j.physc.2009.10.155 (međunarodna recenzija, članak, znanstveni)


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Naslov
NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs

Autori
Paar, Dalibor ; Grafe, H.-J. ; Lang, G. ; Hammerath, F. ; Manthey, K. ; Behr, G. ; Werner, J. ; Büchner, B.

Izvornik
Physica. C, Superconductivity (0921-4534) 470 (2010), S1; S468-S469

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

Ključne riječi
iron arsenide superconductors; nuclear magnetic resonance (NMR); pseudogap

Sažetak
We have performed 139La, 57Fe and 75As nuclear magnetic resonance (NMR) measurements on aligned powders of the optimally doped LaO0.9F0.1FeAs superconductor. For all three nuclei, it is found that the spin lattice relaxation rates scale with one another, with magnitudes reflecting that the FeAs layers support the electronic properties. This scaling suggests a lack of any q-space structure in the dynamical spin susceptibility, contrary to what may be expected in the presence of antiferromagnetic correlations. Rather, our results are more compatible with simple quasi- particle scattering. Furthermore, the 75As relaxation rate decreases linearly from 480 K down to the superconducting transition temperature, making pseudogap fits inadequate. The decrease of the dynamic spin susceptibility with decreasing temperature is compatible with a decrease of the density of states, rather than a change of correlations in q-space.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Rad je prezentiran na skupu 9th International Conference on Materials and Mechanisms of Superconductivity ; Masao Ogata (ur.).



POVEZANOST RADA


Projekti:
119-1191458-1022 - Mikrovalna istraživanja novih materijala (Požek, Miroslav, MZOS ) ( POIROT)

Ustanove:
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Dalibor Paar (autor)

Poveznice na cjeloviti tekst rada:

doi www.sciencedirect.com www.sciencedirect.com

Citiraj ovu publikaciju:

Paar, Dalibor; Grafe, H.-J.; Lang, G.; Hammerath, F.; Manthey, K.; Behr, G.; Werner, J.; Büchner, B.
NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs // Physica. C, Superconductivity, 470 (2010), S1; S468-S469 doi:10.1016/j.physc.2009.10.155 (međunarodna recenzija, članak, znanstveni)
Paar, D., Grafe, H., Lang, G., Hammerath, F., Manthey, K., Behr, G., Werner, J. & Büchner, B. (2010) NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs. Physica. C, Superconductivity, 470 (S1), S468-S469 doi:10.1016/j.physc.2009.10.155.
@article{article, year = {2010}, pages = {S468-S469}, DOI = {10.1016/j.physc.2009.10.155}, keywords = {iron arsenide superconductors, nuclear magnetic resonance (NMR), pseudogap}, journal = {Physica. C, Superconductivity}, doi = {10.1016/j.physc.2009.10.155}, volume = {470}, number = {S1}, issn = {0921-4534}, title = {NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs}, keyword = {iron arsenide superconductors, nuclear magnetic resonance (NMR), pseudogap} }
@article{article, year = {2010}, pages = {S468-S469}, DOI = {10.1016/j.physc.2009.10.155}, keywords = {iron arsenide superconductors, nuclear magnetic resonance (NMR), pseudogap}, journal = {Physica. C, Superconductivity}, doi = {10.1016/j.physc.2009.10.155}, volume = {470}, number = {S1}, issn = {0921-4534}, title = {NMR study of the electronic properties of superconducting LaO0.9F0.1FeAs}, keyword = {iron arsenide superconductors, nuclear magnetic resonance (NMR), pseudogap} }

Časopis indeksira:


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


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