Collective Magnetic Excitations in the Spin Ladder Sr(14)Cu(24)O(41) Measured Using High-Resolution Resonant Inelastic X-Ray Scattering (Articolo in rivista)

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  • Collective Magnetic Excitations in the Spin Ladder Sr(14)Cu(24)O(41) Measured Using High-Resolution Resonant Inelastic X-Ray Scattering (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.103.047401 (literal)
Alternative label
  • Schlappa, J ; Schmitt, T ; Vernay, F ; Strocov, VN ; Ilakovac, V ; Thielemann, B ; Ronnow, HM ; Vanishri, S ; Piazzalunga, A ; Wang, X ; Braicovich, L ; Ghiringhelli, G ; Marin, C ; Mesot, J ; Delley, B ; Patthey, L (2009)
    Collective Magnetic Excitations in the Spin Ladder Sr(14)Cu(24)O(41) Measured Using High-Resolution Resonant Inelastic X-Ray Scattering
    in Physical review letters; American Physical Society (APS), College Pk (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Schlappa, J ; Schmitt, T ; Vernay, F ; Strocov, VN ; Ilakovac, V ; Thielemann, B ; Ronnow, HM ; Vanishri, S ; Piazzalunga, A ; Wang, X ; Braicovich, L ; Ghiringhelli, G ; Marin, C ; Mesot, J ; Delley, B ; Patthey, L (literal)
Pagina inizio
  • 047401-1 (literal)
Pagina fine
  • 047401-4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 103 (literal)
Rivista
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  • 4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland Universite´ Pierre et Marie Curie--CNRS UMR 7614, LCP-MR, Paris, France Universite´ de Cergy-Pontoise, De´partement de Physique, F-95000 Cergy-Pontoise, France Laboratory for Neutron Scattering, ETH Zurich and Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland Ecole Polytechnique Fe´de´rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland INAC/SPSMS/DRFMC, CEA-Grenoble, 17, rue des Martyrs, 38054 Grenoble Cedex 9, France CNR/INFM Coherentia/Soft--Dip. Fisica, Politecnico di Milano, p. Leonardo da Vinci 32, 20133 Milano, Italy (literal)
Titolo
  • Collective Magnetic Excitations in the Spin Ladder Sr(14)Cu(24)O(41) Measured Using High-Resolution Resonant Inelastic X-Ray Scattering (literal)
Abstract
  • We investigate magnetic excitations in the spin-ladder compound Sr14Cu24O41 using high-resolution Cu L3 edge resonant inelastic x-ray scattering (RIXS). Our findings demonstrate that RIXS couples to two-triplon collective excitations. In contrast to inelastic neutron scattering, the RIXS cross section changes only moderately over the entire Brillouin zone, revealing high sensitivity also at small momentum transfers, allowing determination of the two-triplon energy gap as 100 ? 30 meV. Our results are backed by calculations within an effective Hubbard model for a finite-size cluster, and confirm that optical selection rules are obeyed for excitations from this spherically symmetric quantum spin-liquid ground state. (literal)
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