Observation of heavy spin-orbit excitons propagating in a nonmagnetic background: The case of (Ba,Sr)(2)YIrO6

@article{ ISI:000426015100005,
Author = {Kusch, M. and Katukuri, V. M. and Bogdanov, N. A. and Buechner, B. and
   Dey, T. and Efremov, D. V. and Hamann-Borrero, J. E. and Kim, B. H. and
   Krisch, M. and Maljuk, A. and Sala, M. Moretti and Wurmehl, S. and
   Aslan-Cansever, G. and Sturza, M. and Hozoi, L. and van den Brink, J.
   and Geck, J.},
Title = {{Observation of heavy spin-orbit excitons propagating in a nonmagnetic
   background: The case of (Ba,Sr)(2)YIrO6}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2018}},
Volume = {{97}},
Number = {{6}},
Month = {{FEB 23}},
Abstract = {{We present a combined experimental and theoretical study of the
   elementary magnetic excitations in Ba2YIrO6 and Sr2YIrO6-the two most
   intensively discussed candidates for a new type of magnetic instability
   caused by exciton condensation. For both materials, high-resolution
   resonant inelastic x-ray scattering (RIXS) at the Ir L-3 edge reveals
   sharp excitations around 370 and 650 meV energy loss, which we identify
   as triplet and quintet spin-orbit excitons. While the momentum-dependent
   RIXS spectra reveal that both the triplet and the quintet propagate
   coherently within the nonmagnetic background of the singlet sites, these
   modes remain fully gapped. The Ir-Ir exchange interactions in both
   double perovskites are therefore not strong enough to overcome the
   magnetic gap and, hence, our results exclude an intrinsic magnetic
   instability due to a condensation of magnetic excitations for both
   Ba2YIrO6 and Sr2YIrO6.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Kusch, M (Corresponding Author), Tech Univ Dresden, Inst Solid State & Mat Phys, D-01069 Dresden, Germany.
   Kusch, M.; Buechner, B.; Geck, J., Tech Univ Dresden, Inst Solid State & Mat Phys, D-01069 Dresden, Germany.
   Katukuri, V. M.; Bogdanov, N. A.; Buechner, B.; Dey, T.; Efremov, D. V.; Hamann-Borrero, J. E.; Kim, B. H.; Maljuk, A.; Wurmehl, S.; Aslan-Cansever, G.; Sturza, M.; Hozoi, L.; van den Brink, J., Leibniz Inst Solid State & Mat Res IFW Dresden, Helmholtzstr 20, D-01069 Dresden, Germany.
   Dey, T., Univ Augsburg, Expt Phys 6, EKM, D-86159 Augsburg, Germany.
   Kim, B. H., RIKEN, Computat Condensed Matter Phys Lab, Wako, Saitama 3510198, Japan.
   Kim, B. H., RIKEN, Interdisciplinary Theoret Sci iTHES Res Grp, Wako, Saitama 3510198, Japan.
   Krisch, M.; Sala, M. Moretti, European Synchrotron Radiat Facil, Boite Postale 220, F-38043 Grenoble, France.
   Wurmehl, S.; van den Brink, J., Tech Univ Dresden, Dept Phys, D-01069 Dresden, Germany.
   Katukuri, V. M., Ecole Polytech Fed Lausanne, C3MP, IPHYS, CH-1015 Lausanne, Switzerland.
   Bogdanov, N. A., Max Planck Inst Solid State Res, Heisenbergstr 1, D-70569 Stuttgart, Germany.}},
DOI = {{10.1103/PhysRevB.97.064421}},
Article-Number = {{064421}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{BASIS-SETS}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Sturza, Mihai I/R-2684-2017
   Krisch, Michael H/U-5662-2018
   van den Brink, Jeroen/Y-3931-2019
   Katukuri, Vamshi Mohan/J-4048-2015
   Wurmehl, Sabine/A-5872-2009
   Buchner, Bernd/E-2437-2016
   Bogdanov, Nikolay A./AAD-4394-2019
   van den Brink, Jeroen/E-5670-2011
   Moretti, Marco/AAF-9255-2019
   Borrero, Jorge Enrique Hamann/J-4241-2014
   Efremov, Dmitri/M-4393-2014
   Dey, Tusharkanti/B-8290-2012
   }},
ORCID-Numbers = {{Sturza, Mihai I/0000-0001-9000-861X
   Krisch, Michael H/0000-0001-7423-1715
   Katukuri, Vamshi Mohan/0000-0001-9355-0594
   Wurmehl, Sabine/0000-0002-5841-5458
   Buchner, Bernd/0000-0002-3886-2680
   Bogdanov, Nikolay A./0000-0002-5437-4919
   van den Brink, Jeroen/0000-0001-6594-9610
   Moretti, Marco/0000-0002-9744-9976
   Borrero, Jorge Enrique Hamann/0000-0003-2729-9594
   Dey, Tusharkanti/0000-0002-3244-0452}},
Funding-Acknowledgement = {{Deutsche ForschungsgemeinschaftGerman Research Foundation (DFG) {[}SFB
   1143]}},
Funding-Text = {{This work has been supported by the Deutsche Forschungsgemeinschaft via
   SFB 1143. V.M.K., N.A.B., D.E., and L.H. thank Ulrike Nitzsche for
   technical support.}},
Number-of-Cited-References = {{34}},
Times-Cited = {{14}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{40}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{FX4AV}},
Unique-ID = {{ISI:000426015100005}},
OA = {{Green Published}},
DA = {{2020-12-22}},
}