Resonant X-Ray Scattering and the j(eff)=1/2 Electronic Ground State in Iridate Perovskites

@article{ ISI:000331941300021,
Author = {Sala, M. Moretti and Boseggia, S. and McMorrow, D. F. and Monaco, G.},
Title = {{Resonant X-Ray Scattering and the j(eff)=1/2 Electronic Ground State in
   Iridate Perovskites}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2014}},
Volume = {{112}},
Number = {{2}},
Month = {{JAN 15}},
Abstract = {{The resonant x-ray scattering (magnetic elastic, RXMS, and inelastic,
   RIXS) of Ir4+ at the L-2,L-3 edges relevant to spin-orbit Mott
   insulators A(n+1) Ir(n)O3(n+1) (A = Sr, Ba, etc.) are calculated using a
   single-ion model which treats the spin-orbit and tetragonal
   crystal-field terms on an equal footing. Both RXMS and RIXS in the
   spin-flip channel are found to display a nontrivial dependence on the
   direction of the magnetic moment, mu. Crucially, we show that for mu in
   the ab plane, RXMS in the cross-polarized channel at the L-2 edge is
   zero irrespective of the tetragonal crystal field; spin-flip RIXS,
   relevant to measurements of magnons, behaves reciprocally, being zero at
   L-2 when mu is perpendicular to the ab plane. Our results have important
   implications for the assignment of a j(eff) = 1/2 ground state on the
   basis of resonant x-ray experiments.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Sala, MM (Corresponding Author), European Synchrotron Radiat Facil, BP 220, F-38043 Grenoble, France.
   Sala, M. Moretti; Monaco, G., European Synchrotron Radiat Facil, F-38043 Grenoble, France.
   Boseggia, S.; McMorrow, D. F., UCL, London Ctr Nanotechnol, London WC1E 6BT, England.
   Boseggia, S.; McMorrow, D. F., UCL, Dept Phys & Astron, London WC1E 6BT, England.
   Boseggia, S., Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England.
   McMorrow, D. F., Tech Univ Denmark, Dept Phys, DK-2800 Lyngby, Denmark.}},
DOI = {{10.1103/PhysRevLett.112.026403}},
Article-Number = {{026403}},
ISSN = {{0031-9007}},
EISSN = {{1079-7114}},
Research-Areas = {{Physics}},
Web-of-Science-Categories  = {{Physics, Multidisciplinary}},
Author-Email = {{marco.moretti@esrf.fr}},
ResearcherID-Numbers = {{Moretti, Marco/AAF-9255-2019
   Monaco, Giulio/AAW-4387-2020
   McMorrow, Desmond/C-2655-2008
   Sala, Marco Moretti/H-1034-2014
   McMorrow, Desmond Francis/M-9036-2019}},
ORCID-Numbers = {{Moretti, Marco/0000-0002-9744-9976
   Monaco, Giulio/0000-0003-2497-6422
   McMorrow, Desmond/0000-0002-4947-7788
   Sala, Marco Moretti/0000-0002-9744-9976
   McMorrow, Desmond Francis/0000-0002-4947-7788}},
Funding-Acknowledgement = {{EPSRCEngineering & Physical Sciences Research Council (EPSRC); Nordea
   Fonden; Otto Monsteds Fond}},
Funding-Text = {{The authors would like to acknowledge F. de Bergevin, L. Braicovich, G.
   Ghiringhelli, and C. Mazzoli for stimulating and elucidating
   discussions. The work in the UK was supported through a grant from the
   EPSRC, and in Denmark by the Nordea Fonden and the Otto Monsteds Fond.}},
Number-of-Cited-References = {{29}},
Times-Cited = {{44}},
Usage-Count-Last-180-days = {{0}},
Usage-Count-Since-2013 = {{56}},
Journal-ISO = {{Phys. Rev. Lett.}},
Doc-Delivery-Number = {{AB7AI}},
Unique-ID = {{ISI:000331941300021}},
OA = {{Green Published}},
DA = {{2020-12-22}},
}