Static and dynamical susceptibility of LaO1-xFxFeAs (Articolo in rivista)

Type
Label
  • Static and dynamical susceptibility of LaO1-xFxFeAs (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.81.104503 (literal)
Alternative label
  • Monni, M.; Bernardini, F.; Profeta, G.; Sanna, A.; Sharma, S.; Dewhurst, J. K.; Bersier, C.; Continenza, A.; Gross, E. K. U.; Massidda, S. (2010)
    Static and dynamical susceptibility of LaO1-xFxFeAs
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Monni, M.; Bernardini, F.; Profeta, G.; Sanna, A.; Sharma, S.; Dewhurst, J. K.; Bersier, C.; Continenza, A.; Gross, E. K. U.; Massidda, S. (literal)
Pagina inizio
  • 104503 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/abstract/PRB/v81/i10/e104503 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 81 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 10 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Cagliari, CNR, IOM, SLACS, I-09042 Monserrato, CA, Italy ; Univ Cagliari, Dipartimento Fis, I-09042 Monserrato, CA, Italy ; Univ Aquila, Dipartimento Fis, CNISM, I-67010 Laquila, Italy ; Free Univ Berlin, Inst Theoret Phys, D-14195 Berlin, Germany ; Max Planck Soc, Fritz Haber Inst, D-14195 Berlin, Germany ; Max Planck Inst Mikrostrukturphys, D-06120 Halle, Germany (literal)
Titolo
  • Static and dynamical susceptibility of LaO1-xFxFeAs (literal)
Abstract
  • The mechanism of superconductivity and magnetism and their possible interplay have recently been under debate in pnictides. A likely pairing mechanism includes an important role of spin fluctuations and can be expressed in terms of the magnetic susceptibility chi. The latter is therefore a key quantity in the determination of both the magnetic properties of the system in the normal state and of the contribution of spin fluctuations to the pairing potential. A basic ingredient to obtain chi is the independent-electron susceptibility chi(0). Using LaO(1-x)F(x)FeAs as a prototype material, in this report we present a detailed ab initio study of chi(0)(q, omega) as a function of doping and of the internal atomic positions. The resulting static chi(0)(q, 0) is consistent with both the observed M-point-related magnetic stripe phase in the parent compound and with the existence of incommensurate magnetic structures predicted by ab initio calculations upon doping. (literal)
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