by Donnerer, C., Rahn, M. C., Sala, M. Moretti, Vale, J. G. and Pincini, D., Strempfer, J., Krisch, M., Prabhakaran, D. and Boothroyd, A. T. and McMorrow, D. F.
Abstract:
Using resonant magnetic x-ray scattering we address the unresolved nature of the magnetic ground state and the low-energy effective Hamiltonian of Sm2Ir2O7, a prototypical pyrochlore iridate with a finite temperature metal-insulator transition. Through a combination of elastic and inelastic measurements, we show that the magnetic ground state is an all-in-all-out (AIAO) antiferromagnet. The magnon dispersion indicates significant electronic correlations and can be well described by a minimal Hamiltonian that includes Heisenberg exchange [J = 27.3(6) meV] and Dzyaloshinskii-Moriya interactions [D = 4.9(3) meV], which provides a consistent description of the magnetic order and excitations. In establishing that Sm2Ir2O7 has the requisite inversion symmetry preserving AIAO magnetic ground state, our results support the notion that pyrochlore iridates may host correlated Weyl semimetals.
Reference:
All-in-all-Out Magnetic Order and Propagating Spin Waves in Sm2Ir2O7 (Donnerer, C., Rahn, M. C., Sala, M. Moretti, Vale, J. G. and Pincini, D., Strempfer, J., Krisch, M., Prabhakaran, D. and Boothroyd, A. T. and McMorrow, D. F.), In PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, volume 117, 2016.
Bibtex Entry:
@article{ ISI:000379513400006,
Author = {Donnerer, C. and Rahn, M. C. and Sala, M. Moretti and Vale, J. G. and
Pincini, D. and Strempfer, J. and Krisch, M. and Prabhakaran, D. and
Boothroyd, A. T. and McMorrow, D. F.},
Title = {{All-in-all-Out Magnetic Order and Propagating Spin Waves in Sm2Ir2O7}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2016}},
Volume = {{117}},
Number = {{3}},
Month = {{JUL 11}},
Abstract = {{Using resonant magnetic x-ray scattering we address the unresolved
nature of the magnetic ground state and the low-energy effective
Hamiltonian of Sm2Ir2O7, a prototypical pyrochlore iridate with a finite
temperature metal-insulator transition. Through a combination of elastic
and inelastic measurements, we show that the magnetic ground state is an
all-in-all-out (AIAO) antiferromagnet. The magnon dispersion indicates
significant electronic correlations and can be well described by a
minimal Hamiltonian that includes Heisenberg exchange {[}J = 27.3(6)
meV] and Dzyaloshinskii-Moriya interactions {[}D = 4.9(3) meV], which
provides a consistent description of the magnetic order and excitations.
In establishing that Sm2Ir2O7 has the requisite inversion symmetry
preserving AIAO magnetic ground state, our results support the notion
that pyrochlore iridates may host correlated Weyl semimetals.}},
Publisher = {{AMER PHYSICAL SOC}},
Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}},
Type = {{Article}},
Language = {{English}},
Affiliation = {{Donnerer, C (Corresponding Author), UCL, London Ctr Nanotechnol, Mortimer St, London WC1E 6BT, England.
Donnerer, C (Corresponding Author), UCL, Dept Phys & Astron, Mortimer St, London WC1E 6BT, England.
Donnerer, C.; Vale, J. G.; Pincini, D.; McMorrow, D. F., UCL, London Ctr Nanotechnol, Mortimer St, London WC1E 6BT, England.
Donnerer, C.; Vale, J. G.; Pincini, D.; McMorrow, D. F., UCL, Dept Phys & Astron, Mortimer St, London WC1E 6BT, England.
Rahn, M. C.; Prabhakaran, D.; Boothroyd, A. T., Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England.
Sala, M. Moretti; Krisch, M., ESRF, CS 40220, F-38043 Grenoble 9, France.
Vale, J. G., Ecole Polytech Fed Lausanne, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland.
Pincini, D., Diamond Light Source Ltd, Diamond House,Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxon, England.
Strempfer, J., DESY, Notkestr 85, D-22607 Hamburg, Germany.}},
DOI = {{10.1103/PhysRevLett.117.037201}},
Article-Number = {{037201}},
ISSN = {{0031-9007}},
EISSN = {{1079-7114}},
Keywords-Plus = {{R2IR2O7 R; SCATTERING; EU}},
Research-Areas = {{Physics}},
Web-of-Science-Categories = {{Physics, Multidisciplinary}},
ResearcherID-Numbers = {{McMorrow, Desmond Francis/M-9036-2019
Moretti, Marco/AAF-9255-2019
Sala, Marco Moretti/H-1034-2014
Krisch, Michael H/U-5662-2018
Rahn, Marein/R-7616-2016
McMorrow, Desmond/C-2655-2008
}},
ORCID-Numbers = {{McMorrow, Desmond Francis/0000-0002-4947-7788
Moretti, Marco/0000-0002-9744-9976
Sala, Marco Moretti/0000-0002-9744-9976
Krisch, Michael H/0000-0001-7423-1715
Rahn, Marein/0000-0001-7403-8288
McMorrow, Desmond/0000-0002-4947-7788
Pincini, Davide/0000-0002-0884-4748}},
Funding-Acknowledgement = {{UK Engineering and Physical Sciences Research CouncilEngineering &
Physical Sciences Research Council (EPSRC) {[}EP/J016713/1,
EP/J017124/1]; Engineering and Physical Sciences Research
CouncilEngineering & Physical Sciences Research Council (EPSRC)
{[}EP/N027671/1, 1342854, EP/N034694/1, EP/J017124/1, 1745233,
EP/H033939/1, EP/N034872/1] Funding Source: researchfish}},
Funding-Text = {{We acknowledge fruitful discussion with S. Toth, L. Hozoi, S. Nishimoto,
R. Yadav, M. Pereiro, and J. van den Brink. This work is supported by
the UK Engineering and Physical Sciences Research Council, under Grants
No. EP/J016713/1 and No. EP/J017124/1. Parts of this research were
carried out at the light source PETRA III at DESY, a member of the
Helmholtz Association (HGF).}},
Number-of-Cited-References = {{41}},
Times-Cited = {{50}},
Usage-Count-Last-180-days = {{2}},
Usage-Count-Since-2013 = {{95}},
Journal-ISO = {{Phys. Rev. Lett.}},
Doc-Delivery-Number = {{DQ9EO}},
Unique-ID = {{ISI:000379513400006}},
DA = {{2020-12-22}},
}
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