Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal (Articolo in rivista)

Type
Label
  • Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1038/NMAT3723 (literal)
Alternative label
  • M. P. M. Dean 1, G. Dellea 2, R. S. Springell 3, F. Yakhou-Harris 4, K. Kummer 4, N. B. Brookes 4, X. Liu 1,5, Y-J. Sun1,5, J. Strle1,6, T. Schmitt 7, L. Braicovich 2,8, G. Ghiringhelli 2,8, I. Bo?ovic 1 and J. P. Hill 1 (2013)
    Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal
    in Nature materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • M. P. M. Dean 1, G. Dellea 2, R. S. Springell 3, F. Yakhou-Harris 4, K. Kummer 4, N. B. Brookes 4, X. Liu 1,5, Y-J. Sun1,5, J. Strle1,6, T. Schmitt 7, L. Braicovich 2,8, G. Ghiringhelli 2,8, I. Bo?ovic 1 and J. P. Hill 1 (literal)
Pagina inizio
  • 1018 (literal)
Pagina fine
  • 1022 (literal)
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  • 12 (literal)
Rivista
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  • 11 (literal)
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  • 1 Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, New York 11973, USA, 2 Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy, 3 Royal Commission for the Exhibition of 1851 Research Fellow, Interface Analysis Centre, University of Bristol, Bristol BS2 8BS, UK, 4 European Synchrotron Radiation Facility (ESRF), BP 220, F-38043 Grenoble Cedex, France, 5 Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China, 6 Department for Complex Matter, Jo?ef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia, 7 Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland, 8 CNR-SPIN, Istituto Superconduttori, materieli innovativi e dispositivi (literal)
Titolo
  • Persistence of magnetic excitations in La2-xSrxCuO4 from the undoped insulator to the heavily overdoped non-superconducting metal (literal)
Abstract
  • One of the most intensely studied scenarios of high-temperature superconductivity (HTS) postulates pairing by exchange of magnetic excitations1. Indeed, such excitations have been observed up to optimal doping in the cuprates2, 3, 4, 5, 6, 7. In the heavily overdoped regime, neutron scattering measurements indicate that magnetic excitations have effectively disappeared8, 9, 10, and this has been argued to cause the demise of HTS with overdoping1, 8, 10. Here we use resonant inelastic X-ray scattering, which is sensitive to complementary parts of reciprocal space, to measure the evolution of the magnetic excitations in La2-xSrxCuO4 across the entire phase diagram, from a strongly correlated insulator (x = 0) to a non-superconducting metal (x = 0.40). For x = 0, well-defined magnon excitations are observed11. These magnons broaden with doping, but they persist with a similar dispersion and comparable intensity all the way to the non-superconducting, heavily overdoped metallic phase. The destruction of HTS with overdoping is therefore caused neither by the general disappearance nor by the overall softening of magnetic excitations. Other factors, such as the redistribution of spectral weight, must be considered. (literal)
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