by Bisogni, V., Ament, L. J. P., Aruta, C., Balestrino, G. and Brookes, N. B., Forte, F., Ghiringhelli, G., Medaglia, P. G., van den Brink, J. and Braicovich, L.
Abstract:
Substitution of Ca with Ba in CaCuO2 increases the lattice parameter which in turn modifies all interactions between the constituent ions. Here we study the effect on the bimagnon propagating in the Cu-O planes as seen with Resonant Inelastic X-ray Scattering at the Cu-L-3 peak. The bimagnon energy is reduced by a factor of 0.67 +/- 0.06 while its spectral weight decreases at least by a factor of 0.5. This scaling is understood from the dependence on superexchange, which is linear in the former case and quadratic in the second. Moreover the scaling of the bimagnon energy can be understood from the distance dependence of the transfer integrals.
Reference:
Effect of the chemical pressure on bimagnons in antiferromagnetic insulators: CaCuO2 and BaCuO2 studied with Cu-L-3 resonant inelastic X-ray scattering (Bisogni, V., Ament, L. J. P., Aruta, C., Balestrino, G. and Brookes, N. B., Forte, F., Ghiringhelli, G., Medaglia, P. G., van den Brink, J. and Braicovich, L.), In EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, SPRINGER HEIDELBERG, volume 169, 2009.
Bibtex Entry:
@article{ ISI:000264560900021,
Author = {Bisogni, V. and Ament, L. J. P. and Aruta, C. and Balestrino, G. and
   Brookes, N. B. and Forte, F. and Ghiringhelli, G. and Medaglia, P. G.
   and van den Brink, J. and Braicovich, L.},
Title = {{Effect of the chemical pressure on bimagnons in antiferromagnetic
   insulators: CaCuO2 and BaCuO2 studied with Cu-L-3 resonant inelastic
   X-ray scattering}},
Journal = {{EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS}},
Year = {{2009}},
Volume = {{169}},
Pages = {{141-145}},
Month = {{MAR}},
Abstract = {{Substitution of Ca with Ba in CaCuO2 increases the lattice parameter
   which in turn modifies all interactions between the constituent ions.
   Here we study the effect on the bimagnon propagating in the Cu-O planes
   as seen with Resonant Inelastic X-ray Scattering at the Cu-L-3 peak. The
   bimagnon energy is reduced by a factor of 0.67 +/- 0.06 while its
   spectral weight decreases at least by a factor of 0.5. This scaling is
   understood from the dependence on superexchange, which is linear in the
   former case and quadratic in the second. Moreover the scaling of the
   bimagnon energy can be understood from the distance dependence of the
   transfer integrals.}},
Publisher = {{SPRINGER HEIDELBERG}},
Address = {{TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Bisogni, V (Corresponding Author), European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France.
   Bisogni, V.; Brookes, N. B., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Ament, L. J. P., Leiden Univ, Inst Lorentz Theoret Phys, NL-2300 RA Leiden, Netherlands.
   Aruta, C., Univ Naples Federico II, Dipartimento Sci Fis, CNR, INFM Coherentia, I-80126 Naples, Italy.
   Balestrino, G.; Medaglia, P. G., Univ Roma Tor Vergata, CNR, INFM Coherentia, I-00133 Rome, Italy.
   Balestrino, G.; Medaglia, P. G., Univ Roma Tor Vergata, Dipartimento Ingn Meccan, I-00133 Rome, Italy.
   Forte, F., Univ Salerno, Dipartimento Fis, ER Caianiello, I-84081 Baronissi, Italy.
   Forte, F., CNR, INFM, Lab Reg SuperMat, Baronissi, SA, Italy.
   Ghiringhelli, G., Politecn Milan, Dip Fis, INFM, CNR Coherentia, I-20133 Milan, Italy.
   Ghiringhelli, G.; Braicovich, L., Politecn Milan, Dip Fis, INFM, CNR SOFT, I-20133 Milan, Italy.
   van den Brink, J., Radboud Univ Nijmegen, Inst Mol & Mat, NL-6500 GL Nijmegen, Netherlands.}},
DOI = {{10.1140/epjst/e2009-00984-9}},
ISSN = {{1951-6355}},
EISSN = {{1951-6401}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Multidisciplinary}},
Author-Email = {{vbisogni@esrf.fr}},
ResearcherID-Numbers = {{Brookes, Nicholas B/C-6718-2019
   van den Brink, Jeroen/Y-3931-2019
   Aruta, Carmela/L-2957-2015
   Ghiringhelli, Giacomo/D-1159-2014
   van den Brink, Jeroen/E-5670-2011
   }},
ORCID-Numbers = {{Brookes, Nicholas B/0000-0002-1342-9530
   Aruta, Carmela/0000-0002-6917-6667
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   van den Brink, Jeroen/0000-0001-6594-9610
   Braicovich, Lucio/0000-0001-6548-9140}},
Number-of-Cited-References = {{18}},
Times-Cited = {{3}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{10}},
Journal-ISO = {{Eur. Phys. J.-Spec. Top.}},
Doc-Delivery-Number = {{424IR}},
Unique-ID = {{ISI:000264560900021}},
DA = {{2020-12-22}},
}

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