Spin-orbit entangled j=1/2 moments in Ba2CeIrO6: A frustrated fcc quantum magnet

@article{ ISI:000482582200006,
Author = {Revelli, A. and Loo, C. C. and Kiese, D. and Becker, P. and Froehlich,
   T. and Lorenz, T. and Sala, M. Moretti and Monaco, G. and Buessen, F. L.
   and Attig, J. and Hermanns, M. and Streltsov, V, S. and Khomskii, I, D.
   and van den Brink, I. J. and Braden, M. and van Loosdrecht, P. H. M. and
   Trebst, S. and Paramekanti, A. and Grueninger, M.},
Title = {{Spin-orbit entangled j=1/2 moments in Ba2CeIrO6: A frustrated fcc
   quantum magnet}},
Journal = {{PHYSICAL REVIEW B}},
Year = {{2019}},
Volume = {{100}},
Number = {{8}},
Month = {{AUG 26}},
Abstract = {{We establish the double perovskite Ba2CeIrO6 as a nearly ideal model
   system for j = 1/2 moments, with resonant inelastic x-ray scattering
   indicating that the ideal j = 1/2 state contributes by more than 99% to
   the ground-state wave function. The local j = 1/2 moments form an fcc
   lattice and are found to order antiferromagnetically at T-N = 14 K, more
   than an order of magnitude below the Curie-Weiss temperature. Model
   calculations show that the geometric frustration of the fcc Heisenberg
   antiferromagnet is further enhanced by a next-nearest neighbor exchange,
   and a significant size of the latter is indicated by ab initio theory.
   Our theoretical analysis shows that magnetic order is driven by a
   bond-directional Kitaev exchange and by local distortions via a strong
   magnetoelastic effect. Both, the suppression of frustration by Kitaev
   exchange and the strong magnetoelastic effect are typically not expected
   for j = 1/2 compounds making Ba2CeIrO6 a riveting example for the rich
   physics of spin-orbit entangled Mott insulators.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Revelli, A (Corresponding Author), Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
   Revelli, A.; Loo, C. C.; Froehlich, T.; Lorenz, T.; Khomskii, D., I; Braden, M.; van Loosdrecht, P. H. M.; Grueninger, M., Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
   Kiese, D.; Buessen, F. L.; Attig, J.; Trebst, S., Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany.
   Becker, P., Univ Cologne, Inst Geol & Mineral, Sect Crystallog, D-50674 Cologne, Germany.
   Sala, M. Moretti, Politecn Milan, Dipartimento Fis, I-120133 Milan, Italy.
   Monaco, G., Univ Trento, Dipartimento Fis, I-38123 Povo, TN, Italy.
   Hermanns, M., Stockholm Univ, Alballova Univ Ctr, Dept Phys, SE-10691 Stockholm, Sweden.
   Hermanns, M., KTH Royal Inst Technol, Nordita, SE-10691 Stockholm, Sweden.
   Hermanns, M., Stockholm Univ, SE-10691 Stockholm, Sweden.
   Streltsov, S., V, Russian Acad Sci, MN Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620137, Russia.
   Streltsov, S., V, Ural Fed Univ, Ekaterinburg 620002, Russia.
   van den Brink, I. J., IFW Dresden, Inst Theoret Solid State Phys, D-01069 Dresden, Germany.
   Paramekanti, A., Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada.}},
DOI = {{10.1103/PhysRevB.100.085139}},
Article-Number = {{085139}},
ISSN = {{2469-9950}},
EISSN = {{2469-9969}},
Keywords-Plus = {{GROUND-STATE; DISORDER; LIQUID; ORDER}},
Research-Areas = {{Materials Science; Physics}},
Web-of-Science-Categories  = {{Materials Science, Multidisciplinary; Physics, Applied; Physics,
   Condensed Matter}},
ResearcherID-Numbers = {{Monaco, Giulio/AAW-4387-2020
   van Loosdrecht, Paul H.M./AAF-8505-2020
   Streltsov, Sergey/A-6674-2012
   Trebst, Simon/C-5390-2008
   Lorenz, Thomas/AAC-3331-2020
   Hermanns, Maria/M-5112-2015
   revelli, alberto/AAF-1997-2020
   Moretti, Marco/AAF-9255-2019
   Hermanns, Maria/AAV-7120-2020
   }},
ORCID-Numbers = {{Monaco, Giulio/0000-0003-2497-6422
   van Loosdrecht, Paul H.M./0000-0002-3704-9890
   Streltsov, Sergey/0000-0002-2823-1754
   Trebst, Simon/0000-0002-1479-9736
   Lorenz, Thomas/0000-0003-4832-5157
   Hermanns, Maria/0000-0003-2258-1945
   Moretti, Marco/0000-0002-9744-9976
   Hermanns, Maria/0000-0003-2258-1945
   Buessen, Finn Lasse/0000-0002-7773-4665
   Braden, Markus/0000-0002-9284-6585}},
Funding-Acknowledgement = {{Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)German
   Research Foundation (DFG) {[}277146847, 247310070 -CRC 1238, CRC 1143];
   Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation;
   Swedish Research CouncilSwedish Research Council; NSERC of CanadaNatural
   Sciences and Engineering Research Council of Canada; Canadian Institute
   for Advanced ResearchCanadian Institute for Advanced Research (CIFAR);
   Russian Science FoundationRussian Science Foundation (RSF)
   {[}17-12-01207]; University of Cologne}},
Funding-Text = {{We acknowledge funding from the Deutsche Forschungsgemeinschaft (DFG,
   German Research Foundation) -Project numbers 277146847 and 247310070
   -CRC 1238 (projects A02, B01, B02, B03, C02, C03) and CRC 1143 (project
   A05), respectively. M. H. acknowledges partial funding by the Knut and
   Alice Wallenberg Foundation and the Swedish Research Council. A.P.
   acknowledges support from NSERC of Canada and the Canadian Institute for
   Advanced Research, and the support and hospitality of the University of
   Cologne. The numerical simulations were performed on the JURECA booster
   at FZ Julich and the CHEOPS cluster at RRZK Cologne. DFT calculations
   were supported by the Russian Science Foundation via project
   17-12-01207.}},
Number-of-Cited-References = {{61}},
Times-Cited = {{6}},
Usage-Count-Last-180-days = {{6}},
Usage-Count-Since-2013 = {{29}},
Journal-ISO = {{Phys. Rev. B}},
Doc-Delivery-Number = {{IT1BY}},
Unique-ID = {{ISI:000482582200006}},
DA = {{2020-12-22}},
}