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Structural investigation of the bilayer iridate Sr_3Ir_2O_7

Hogan, Tom and Bjaalie, Lars and Zhao, Liuyan and Belvin, Carina and Wang, Xiaoping and Van de Walle, Chris G. and Hsieh, David and Wilson, Stephen D. (2016) Structural investigation of the bilayer iridate Sr_3Ir_2O_7. Physical Review B, 93 (13). Art. No. 134110. ISSN 2469-9950. http://resolver.caltech.edu/CaltechAUTHORS:20160525-143627761

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Abstract

A complete structural solution of the bilayer iridate compound Sr_3Ir_2O_7 presently remains outstanding. Previously reported structures for this compound vary and all fail to explain weak structural violations observed in neutron scattering measurements as well as the presence of a net ferromagnetic moment in the basal plane. In this paper, we present single crystal neutron diffraction and rotational anisotropy second harmonic generation measurements unveiling a lower, monoclinic symmetry inherent to Sr_3Ir_2O_7. Combined with density functional theory, our measurements identify the correct structural space group as No. 15 (C2/c) and provide clarity regarding the local symmetry of Ir^(4+) cations within this spin-orbit Mott material.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevB.93.134110DOIArticle
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.93.134110PublisherArticle
http://journals.aps.org/prb/supplemental/10.1103/PhysRevB.93.134110PublisherSupplemental Material
http://arxiv.org/abs/1603.07390arXivDiscussion Paper
ORCID:
AuthorORCID
Hsieh, David0000-0002-0812-955X
Alternate Title:Structural investigation of the bilayer iridate Sr3Ir2O7
Additional Information:© 2016 American Physical Society. Received 29 February 2016; revised manuscript received 1 April 2016; published 19 April 2016. This work was supported in part by NSF Award No. DMR-1505549 (S.D.W.), as well as by the MRSEC Program of the National Science Foundation under Award No. DMR 1121053 (T.H., L.B., C.VdW.). Work at Caltech (L.Z., D.H.) was supported by ARO Grant No. W911NF-13-1-0059. Instrumentation for the SHG measurements was partially supported by ARO DURIP Award W911NF-13-1-0293 and by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (PHY-1125565) with support of the Gordon and Betty Moore Foundation through Grant GBMF1250. C.B. acknowledges support from the Caltech WAVE Fellows program. Work performed at the ORNL Spallation Neutron Source TOPAZ single-crystal diffractometer was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy, under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
NSFDMR-1505549
NSFDMR-1121053
Army Research Office (ARO)W911NF-13-1-0059
Army Research Office (ARO)W911NF-13-1-0293
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
NSFPHY-1125565
Gordon and Betty Moore FoundationGBMF1250
Caltech WAVE Fellows ProgramUNSPECIFIED
Department of Energy (DOE) DE-AC05-00OR22725
Issue or Number:13
Record Number:CaltechAUTHORS:20160525-143627761
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160525-143627761
Official Citation:Structural investigation of the bilayer iridate Sr_3Ir_2O_7 Tom Hogan, Lars Bjaalie, Liuyan Zhao, Carina Belvin, Xiaoping Wang, Chris G. Van de Walle, David Hsieh, and Stephen D. Wilson Phys. Rev. B 93, 134110
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67362
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:26 May 2016 16:32
Last Modified:22 Aug 2019 21:49

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