Energy and symmetry of dd excitations in undoped layered cuprates measured by Cu L-3 resonant inelastic x-ray scattering

@article{ ISI:000289994100003,
Author = {Moretti Sala, M. and Bisogni, V. and Aruta, C. and Balestrino, G. and
   Berger, H. and Brookes, N. B. and de Luca, G. M. and Di Castro, D. and
   Grioni, M. and Guarise, M. and Medaglia, P. G. and Granozio, F. Miletto
   and Minola, M. and Perna, P. and Radovic, M. and Salluzzo, M. and
   Schmitt, T. and Zhou, K. J. and Braicovich, L. and Ghiringhelli, G.},
Title = {{Energy and symmetry of dd excitations in undoped layered cuprates
   measured by Cu L-3 resonant inelastic x-ray scattering}},
Journal = {{NEW JOURNAL OF PHYSICS}},
Year = {{2011}},
Volume = {{13}},
Month = {{APR 19}},
Abstract = {{We measured the high-resolution Cu L-3 edge resonant inelastic x-ray
   scattering (RIXS) of undoped cuprates La2CuO4, Sr2CuO2Cl2, CaCuO2 and
   NdBa2Cu3O6. The dominant spectral features were assigned to dd
   excitations and we extensively studied their polarization and scattering
   geometry dependence. In a pure ionic picture, we calculated the
   theoretical cross sections for those excitations and used these to fit
   the experimental data with excellent agreement. By doing so, we were
   able to determine the energy and symmetry of Cu-3d states for the four
   systems with unprecedented accuracy and confidence. The values of the
   effective parameters could be obtained for the single-ion crystal field
   model but not for a simple two-dimensional cluster model. The firm
   experimental assessment of dd excitation energies carries important
   consequences for the physics of high-T-c superconductors. On the one
   hand, we found that the minimum energy of orbital excitation is always
   >= 1.4 eV, i.e. well above the mid-infrared spectral range, which leaves
   to magnetic excitations (up to 300 meV) a major role in Cooper pairing
   in cuprates. On the other hand, it has become possible to study
   quantitatively the effective influence of dd excitations on the
   superconducting gap in cuprates.}},
Publisher = {{IOP PUBLISHING LTD}},
Address = {{TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Moretti Sala, M (Corresponding Author), European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France.
   Moretti Sala, M.; Bisogni, V.; Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Moretti Sala, M.; Minola, M.; Braicovich, L.; Ghiringhelli, G., Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy.
   Aruta, C.; de Luca, G. M.; Granozio, F. Miletto; Perna, P.; Radovic, M.; Salluzzo, M., Univ Naples Federico II, CNR SPIN, I-80126 Naples, Italy.
   Aruta, C.; de Luca, G. M.; Granozio, F. Miletto; Perna, P.; Radovic, M.; Salluzzo, M., Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy.
   Balestrino, G.; Di Castro, D.; Medaglia, P. G., Univ Roma Tor Vergata, CNR SPIN, I-00133 Rome, Italy.
   Balestrino, G.; Di Castro, D.; Medaglia, P. G., Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy.
   Berger, H.; Grioni, M.; Guarise, M., Ecole Polytech Fed Lausanne, Inst Phys Matiere Condensee, CH-1015 Lausanne, Switzerland.
   Schmitt, T.; Zhou, K. J., Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
   Moretti Sala, M.; Minola, M., Politecn Milan, CNISM, I-20133 Milan, Italy.
   Braicovich, L.; Ghiringhelli, G., Politecn Milan, CNR SPIN, I-20133 Milan, Italy.}},
DOI = {{10.1088/1367-2630/13/4/043026}},
Article-Number = {{043026}},
ISSN = {{1367-2630}},
Keywords-Plus = {{OPTICAL-ABSORPTION; EMISSION-SPECTROSCOPY; ANTIFERROMAGNETISM;
   RESOLUTION; PHOTOEMISSION; TEMPERATURE; PARENT}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Multidisciplinary}},
Author-Email = {{marco.moretti@esrf.fr}},
ResearcherID-Numbers = {{PERNA, PAOLO/N-6368-2019
   GRANOZIO, FABIO MILETTO/R-9662-2017
   Moretti, Marco/AAF-9255-2019
   Brookes, Nicholas B/C-6718-2019
   Ghiringhelli, Giacomo/D-1159-2014
   Schmitt, Thorsten/A-7025-2010
   PERNA, PAOLO/C-3862-2012
   salluzzo, marco/C-5919-2009
   Aruta, Carmela/L-2957-2015
   Sala, Marco Moretti/H-1034-2014
   }},
ORCID-Numbers = {{PERNA, PAOLO/0000-0001-8537-4834
   GRANOZIO, FABIO MILETTO/0000-0002-9417-7848
   Moretti, Marco/0000-0002-9744-9976
   Brookes, Nicholas B/0000-0002-1342-9530
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   PERNA, PAOLO/0000-0001-8537-4834
   salluzzo, marco/0000-0001-8372-6963
   Aruta, Carmela/0000-0002-6917-6667
   Sala, Marco Moretti/0000-0002-9744-9976
   Radovic, Milan/0000-0003-4042-9648
   Minola, Matteo/0000-0003-4084-0664
   DI CASTRO, DANIELE/0000-0002-0878-6904
   Zhou, Ke-Jin/0000-0001-9293-0595
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{54}},
Times-Cited = {{87}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{53}},
Journal-ISO = {{New J. Phys.}},
Doc-Delivery-Number = {{756EI}},
Unique-ID = {{ISI:000289994100003}},
OA = {{DOAJ Gold, Green Accepted}},
DA = {{2020-12-22}},
}