Momentum Dependence of Orbital Excitations in Mott-Insulating Titanates

@article{ ISI:000269639800056,
Author = {Ulrich, C. and Ament, L. J. P. and Ghiringhelli, G. and Braicovich, L.
   and Moretti Sala, M. and Pezzotta, N. and Schmitt, T. and Khaliullin, G.
   and van den Brink, J. and Roth, H. and Lorenz, T. and Keimer, B.},
Title = {{Momentum Dependence of Orbital Excitations in Mott-Insulating Titanates}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2009}},
Volume = {{103}},
Number = {{10}},
Month = {{SEP 4}},
Abstract = {{High-resolution resonant inelastic x-ray scattering has been used to
   determine the momentum dependence of orbital excitations in
   Mott-insulating LaTiO(3) and YTiO(3) over a wide range of the Brillouin
   zone. The data are compared to calculations in the framework of
   lattice-driven and superexchange-driven orbital ordering models. A
   superexchange model in which the experimentally observed modes are
   attributed to two-orbiton excitations yields the best description of the
   data.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Ulrich, C (Corresponding Author), Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
   Ulrich, C.; Khaliullin, G.; Keimer, B., Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
   Ament, L. J. P.; van den Brink, J., Leiden Univ, Inst Lorentz Theoret Phys, NL-2300 RA Leiden, Netherlands.
   Ghiringhelli, G., CNR INFM COHERENTIA, I-20133 Milan, Italy.
   Ghiringhelli, G.; Braicovich, L.; Moretti Sala, M.; Pezzotta, N., Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy.
   Braicovich, L.; Moretti Sala, M.; Pezzotta, N., CNR INFM SOFT, I-20133 Milan, Italy.
   Schmitt, T., Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland.
   van den Brink, J., SLAC, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA.
   Roth, H.; Lorenz, T., Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.}},
DOI = {{10.1103/PhysRevLett.103.107205}},
Article-Number = {{107205}},
ISSN = {{0031-9007}},
Keywords-Plus = {{X-RAY-SCATTERING; TRANSITION-METAL OXIDES; LATIO3}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Multidisciplinary}},
ResearcherID-Numbers = {{Lorenz, Thomas/AAC-3331-2020
   Ghiringhelli, Giacomo/D-1159-2014
   van den Brink, Jeroen/E-5670-2011
   van den Brink, Jeroen/Y-3931-2019
   Moretti, Marco/AAF-9255-2019
   Lorenz, Thomas/J-2955-2017
   Schmitt, Thorsten/A-7025-2010
   Sala, Marco Moretti/H-1034-2014
   Ulrich, Clemens/M-6517-2017
   }},
ORCID-Numbers = {{Lorenz, Thomas/0000-0003-4832-5157
   Ghiringhelli, Giacomo/0000-0003-0867-7748
   van den Brink, Jeroen/0000-0001-6594-9610
   Moretti, Marco/0000-0002-9744-9976
   Lorenz, Thomas/0000-0003-4832-5157
   Sala, Marco Moretti/0000-0002-9744-9976
   Ulrich, Clemens/0000-0002-6829-9374
   Braicovich, Lucio/0000-0001-6548-9140}},
Funding-Acknowledgement = {{DFGGerman Research Foundation (DFG) {[}SFB608]}},
Funding-Text = {{We thank M. W. Haverkort for useful discussions. L. A. thanks the
   MPI-FKF, Stuttgart, for its hospitality. The crystal growth in Cologne
   was supported by the DFG through SFB608. This work was performed at the
   ADRESS beam line of the SLS ( Paul Scherrer Institut) using the SAXES
   spectrometer developed jointly by Politecnico di Milano, SLS, and EPFL.}},
Number-of-Cited-References = {{33}},
Times-Cited = {{44}},
Usage-Count-Last-180-days = {{1}},
Usage-Count-Since-2013 = {{50}},
Journal-ISO = {{Phys. Rev. Lett.}},
Doc-Delivery-Number = {{492FH}},
Unique-ID = {{ISI:000269639800056}},
OA = {{Green Accepted}},
DA = {{2020-12-22}},
}