Polarization-resolved Cu L-3-edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBa2Cu3O7-delta

@article{ ISI:000466381200006,
Author = {Fumagalli, R. and Braicovich, L. and Minola, M. and Peng, Y. Y. and
   Kummer, K. and Betto, D. and Rossi, M. and Lefrancois, E. and Morawe, C.
   and Salluzzo, M. and Suzuki, H. and Yakhou, F. and Le Tacon, M. and
   Keimer, B. and Brookes, N. B. and Sala, M. Moretti and Ghiringhelli, G.},
Title = {{Polarization-resolved Cu L-3-edge resonant inelastic x-ray scattering of
   orbital and spin excitations in NdBa2Cu3O7-delta}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2019}},
Volume = {{99}},
Number = {{13}},
Month = {{APR 23}},
Abstract = {{High-resolution resonant inelastic x-ray scattering (RIXS) has proven
   particularly effective in the determination of crystal field and spin
   excitations in cuprates. Its strength lies in the large Cu L-3 resonance
   and in the fact that the scattering cross section follows quite closely
   the single-ion model predictions, both in the insulating parent
   compounds and in the superconducting doped materials. However, the
   spectra become increasingly broader with (hole) doping, hence resolving
   and assigning spectral features has proven challenging even with the
   highest energy resolution experimentally achievable. Here we have
   overcome this limitation by measuring the polarization dependence of the
   RIXS spectra as a function of momentum transfer and doping in thin films
   of NdBa2Cu3O7-delta. Besides confirming the previous assignment of dd
   and spin excitations (magnon, bimagnon) in the antiferromagnetic
   insulating parent compound, we unequivocally single out the actual
   spin-flip contribution at all dopings. We also demonstrate that the
   softening of dd excitations is mainly attributed to the shift of the xy
   peak to lower energy loss. These results provide a definitive assessment
   of the RIXS spectra of cuprates and demonstrate that RIXS measurements
   with polarization control are practically feasible and highly
   informative.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Ghiringhelli, G (Corresponding Author), Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.
   Ghiringhelli, G (Corresponding Author), Politecn Milan, CNR, SPIN, Dipartimento Fis, I-20133 Milan, Italy.
   Fumagalli, R.; Braicovich, L.; Peng, Y. Y.; Rossi, M.; Sala, M. Moretti; Ghiringhelli, G., Politecn Milan, Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy.
   Braicovich, L.; Kummer, K.; Betto, D.; Morawe, C.; Yakhou, F.; Brookes, N. B., European Synchrotron, ESRF, BP 220, F-38043 Grenoble, France.
   Minola, M.; Betto, D.; Lefrancois, E.; Suzuki, H.; Keimer, B., Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany.
   Salluzzo, M., CNR, SPIN, Complesso Monte Santangelo,Via Cinthia, I-80126 Naples, Italy.
   Le Tacon, M., Karlsruhe Inst Technol, Inst Solid State Phys IFP, D-76021 Karlsruhe, Germany.
   Ghiringhelli, G., Politecn Milan, CNR, SPIN, Dipartimento Fis, I-20133 Milan, Italy.
   Peng, Y. Y., Univ Illinois, Dept Phys, Urbana, IL 61801 USA.
   Peng, Y. Y., Univ Illinois, Seitz Mat Res Lab, Urbana, IL 61801 USA.}},
DOI = {{10.1103/PhysRevB.99.134517}},
Article-Number = {{134517}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{PAIRING INTERACTION; TEMPERATURE; SUPERCONDUCTIVITY; CALCULUS; OXYGEN}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
Author-Email = {{giacomo.ghiringhelli@polimi.it}},
ResearcherID-Numbers = {{Lefrancois, Emilie/Q-4316-2019
   Ghiringhelli, Giacomo/D-1159-2014
   , Le Tacon Matthieu/D-8023-2011
   }},
ORCID-Numbers = {{Lefrancois, Emilie/0000-0002-8959-7848
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   , Le Tacon Matthieu/0000-0002-5838-3724
   Minola, Matteo/0000-0003-4084-0664}},
Funding-Acknowledgement = {{ERC-P-ReXS Project of the Fondazione CARIPLO, Regione Lombardia
   {[}2016-0790]; MIUR Italian Ministry for Research through project PIK
   Polarix; Alexander von Humboldt FoundationAlexander von Humboldt
   Foundation}},
Funding-Text = {{The experimental data were collected at the beam line ID32 of the
   European Synchrotron (ESRF) in Grenoble (France) using the ERIXS
   spectrometer designed jointly by the ESRF and the Politecnico di Milano.
   This work was supported by ERC-P-ReXS Project No. 2016-0790 of the
   Fondazione CARIPLO, Regione Lombardia and by MIUR Italian Ministry for
   Research through project PIK Polarix. M. M. and H. S. were partially
   supported by the Alexander von Humboldt Foundation.}},
Number-of-Cited-References = {{63}},
Times-Cited = {{12}},
Usage-Count-Last-180-days = {{4}},
Usage-Count-Since-2013 = {{18}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{HW0OR}},
Unique-ID = {{ISI:000466381200006}},
DA = {{2020-12-22}},
}