Bimagnon studies in cuprates with resonant inelastic x-ray scattering at the O K edge. I. Assessment on La2CuO4 and comparison with the excitation at Cu L-3 and Cu K edges

@article{ ISI:000305604600007,
Author = {Bisogni, V. and Simonelli, L. and Ament, L. J. P. and Forte, F. and
   Sala, M. Moretti and Minola, M. and Huotari, S. and van den Brink, J.
   and Ghiringhelli, G. and Brookes, N. B. and Braicovich, L.},
Title = {{Bimagnon studies in cuprates with resonant inelastic x-ray scattering at
   the O K edge. I. Assessment on La2CuO4 and comparison with the
   excitation at Cu L-3 and Cu K edges}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2012}},
Volume = {{85}},
Number = {{21}},
Month = {{JUN 25}},
Abstract = {{We assess the capabilities of magnetic resonant inelastic x-ray
   scattering (RIXS) at the O K edge in undoped cuprates by taking La2CuO4
   as a benchmark case, based on a series of RIXS measurements that we
   present here. By combining the experimental results with basic theory we
   point out the fingerprints of bimagnon excitation in the O K edge RIXS
   spectra. These are a dominant peak around 450 meV, the almost complete
   absence of dispersion both with pi and sigma polarization, and the
   almost constant intensity vs the transferred momentum with sigma
   polarization. This behavior is quite different from Cu L-3 edge RIXS
   giving a strongly dispersing bimagnon tending to zero at the center of
   the Brillouin zone. This is clearly shown by RIXS measurements at the Cu
   L-3 edge that we present. The Cu L-3 bimagnon spectra and those at the
   Cu K edge-both from the literature and from our data-however, have the
   same shape. These similarities and differences are understood in terms
   of different sampling of the bimagnon continuum. This panorama points
   out the unique possibilities offered by O K RIXS in the study of
   magnetic excitations in cuprates near the center of the BZ.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Bisogni, V (Corresponding Author), Leibniz Inst Solid State & Mat Res IFW Dresden, POB 270116, D-01171 Dresden, Germany.
   Bisogni, V.; Simonelli, L.; Huotari, S.; Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Bisogni, V.; van den Brink, J., Leibniz Inst Solid State & Mat Res IFW Dresden, D-01171 Dresden, Germany.
   Ament, L. J. P.; van den Brink, J., Leiden Univ, Inst Lorenz Theoret Phys, NL-2300 RA Leiden, Netherlands.
   Forte, F., Univ Salerno, CNR SPIN, I-84084 Salerno, Italy.
   Forte, F., Univ Salerno, Dipartimento Fis ER Caianiello, I-84084 Salerno, Italy.
   Sala, M. Moretti; Minola, M.; Ghiringhelli, G.; Braicovich, L., Politecn Milan, CNR SPIN, Dipartimento Fis, I-20133 Milan, Italy.
   Huotari, S., Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland.}},
DOI = {{10.1103/PhysRevB.85.214527}},
Article-Number = {{214527}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{FLUORESCENCE SPECTROSCOPY; RESOLUTION; SPECTROMETERS; CRYSTALS; PHONON;
   STATES}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Sala, Marco Moretti/H-1034-2014
   Simonelli, Laura/I-1963-2015
   Brookes, Nicholas B/C-6718-2019
   van den Brink, Jeroen/E-5670-2011
   Moretti, Marco/AAF-9255-2019
   van den Brink, Jeroen/Y-3931-2019
   Ghiringhelli, Giacomo/D-1159-2014
   }},
ORCID-Numbers = {{Sala, Marco Moretti/0000-0002-9744-9976
   Brookes, Nicholas B/0000-0002-1342-9530
   van den Brink, Jeroen/0000-0001-6594-9610
   Moretti, Marco/0000-0002-9744-9976
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   Braicovich, Lucio/0000-0001-6548-9140
   Minola, Matteo/0000-0003-4084-0664
   Huotari, Simo/0000-0003-4506-8722}},
Funding-Acknowledgement = {{Deutscher Akademischer Austausch DienstDeutscher Akademischer Austausch
   Dienst (DAAD); Helsinki University research funds {[}490076]; Academy of
   FinlandAcademy of Finland {[}1256211, 1254065];  {[}264098-MAMA]}},
Funding-Text = {{The work took enormous advantage from numerous stimulating and
   productive discussions with many colleagues and in particular with B.
   Buchner, J. Geck, J. Mesot, and G. Monaco. The Cu L<INF>3</INF> RIXS was
   performed at the ADRESS beam line of the SLS (PSI) using the SAXES
   spectrometer developed jointly by Politecnico di Milano, SLS, and EPFL.
   For the measurements taken at the SLS we acknowledge the assistance by
   T. Schmitt. The authors are grateful to F. Miletto Granozio and M.
   Radovic for providing the LCO thin film sample and to J. Mesot for the
   LCO single crystal. V.B. acknowledges the financial support from
   Deutscher Akademischer Austausch Dienst. F.F. acknowledges financial
   support from FP7/2007-2013 under Grant Agreement No. 264098-MAMA. S.H.
   was supported by Helsinki University research funds (Project No. 490076)
   and the Academy of Finland (Projects No. 1256211 and No. 1254065).}},
Number-of-Cited-References = {{45}},
Times-Cited = {{38}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{37}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{963FD}},
Unique-ID = {{ISI:000305604600007}},
DA = {{2020-12-22}},
}