Revisiting the Kitaev material candidacy of Ir4+ double perovskite iridates

Aczel, Adam A.; Clancy, James P.; Chen, Qiang; Zhou, H. D.; Reig-i-Plessis, D.; MacDougall, Gregory J.; Ruff, Jacob P. C.; Upton, M. H.; Islam, Z.; Williams, Travis J.; Calder, Stuart A.; Yan, J. -Q.

doi:10.1103/PhysRevB.99.134417

Title: Revisiting the Kitaev material candidacy of ${Ir}^{4 +}$ double perovskite iridates

Abstract

Quantum magnets with significant bond-directional Ising interactions, so-called Kitaev materials, have attracted tremendous attention recently in the search for exotic spin liquid states. Here we present a comprehensive set of measurements that enables us to investigate the crystal structures, Ir⁴⁺ single-ion properties, and magnetic ground states of the double perovskite iridates La₂BIrO₆ (B = Mg, Zn) and A₂CeIrO₆ (A = Ba, Sr) with a large nearest-neighbor distance >5 angstrom between Ir⁴⁺ ions. Our neutron powder diffraction data on Ba₂CeIrO₆ can be refined in the cubic space group Fm$$\overline{3}$$m, while the other three systems are characterized by weak monoclinic structural distortions. Despite the variance in the noncubic crystal field experienced by the Ir⁴⁺ ions in these materials, x-ray absorption spectroscopy and resonant inelastic x-ray scattering are consistent with J_eff = 1/2 moments in all cases. Furthermore, neutron scattering and resonant magnetic x-ray scattering show that these systems host A-type antiferromagnetic order. These electronic and magnetic ground states are consistent with expectations for face-centered-cubic magnets with significant antiferromagnetic Kitaev exchange, which indicates that spacing magnetic ions far apart may be a promising design principle for uncovering additional Kitaev materials

Authors:

^[1]; Clancy, James P. ^[2]; Chen, Qiang ^[3]; Zhou, H. D. ^[3]; Reig-i-Plessis, D. ^[4]; MacDougall, Gregory J. ^[4]; Ruff, Jacob P. C. ^[5]; Upton, M. H. ^[6]; Islam, Z. ^[6];

^[7];

^[7]

Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
McMaster Univ., Hamilton, ON (Canada)
Univ. of Tennessee, Knoxville, TN (United States)
Univ. of Illinois, Urbana-Champaign, IL (United States)
Cornell Univ., Ithaca, NY (United States). Cornell High Energy Synchrotron Source (CHESS)
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Thu Apr 11 00:00:00 EDT 2019

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1530100

Alternate Identifier(s):: OSTI ID: 1506553; OSTI ID: 1515547

Grant/Contract Number:: AC05-00OR22725; AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 99; Journal Issue: 13; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats


                    Aczel, Adam A., Clancy, James P., Chen, Qiang, Zhou, H. D., Reig-i-Plessis, D., MacDougall, Gregory J., Ruff, Jacob P. C., Upton, M. H., Islam, Z., Williams, Travis J., Calder, Stuart A., and Yan, J. -Q. Revisiting the Kitaev material candidacy of Ir4+ double perovskite iridates.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevB.99.134417.

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                    Aczel, Adam A., Clancy, James P., Chen, Qiang, Zhou, H. D., Reig-i-Plessis, D., MacDougall, Gregory J., Ruff, Jacob P. C., Upton, M. H., Islam, Z., Williams, Travis J., Calder, Stuart A., & Yan, J. -Q. Revisiting the Kitaev material candidacy of Ir4+ double perovskite iridates.  United States.  https://doi.org/10.1103/PhysRevB.99.134417

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                    Aczel, Adam A., Clancy, James P., Chen, Qiang, Zhou, H. D., Reig-i-Plessis, D., MacDougall, Gregory J., Ruff, Jacob P. C., Upton, M. H., Islam, Z., Williams, Travis J., Calder, Stuart A., and Yan, J. -Q. Thu .  
"Revisiting the Kitaev material candidacy of Ir4+ double perovskite iridates".  United States.  https://doi.org/10.1103/PhysRevB.99.134417.  https://www.osti.gov/servlets/purl/1530100.

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@article{osti_1530100,

  title        = {Revisiting the Kitaev material candidacy of Ir4+ double perovskite iridates},

  author       = {Aczel, Adam A. and Clancy, James P. and Chen, Qiang and Zhou, H. D. and Reig-i-Plessis, D. and MacDougall, Gregory J. and Ruff, Jacob P. C. and Upton, M. H. and Islam, Z. and Williams, Travis J. and Calder, Stuart A. and Yan, J. -Q.},

  abstractNote = {Quantum magnets with significant bond-directional Ising interactions, so-called Kitaev materials, have attracted tremendous attention recently in the search for exotic spin liquid states. Here we present a comprehensive set of measurements that enables us to investigate the crystal structures, Ir4+ single-ion properties, and magnetic ground states of the double perovskite iridates La2BIrO6 (B = Mg, Zn) and A2CeIrO6 (A = Ba, Sr) with a large nearest-neighbor distance >5 angstrom between Ir4+ ions. Our neutron powder diffraction data on Ba2CeIrO6 can be refined in the cubic space group Fm$\overline{3}$m, while the other three systems are characterized by weak monoclinic structural distortions. Despite the variance in the noncubic crystal field experienced by the Ir4+ ions in these materials, x-ray absorption spectroscopy and resonant inelastic x-ray scattering are consistent with Jeff = 1/2 moments in all cases. Furthermore, neutron scattering and resonant magnetic x-ray scattering show that these systems host A-type antiferromagnetic order. These electronic and magnetic ground states are consistent with expectations for face-centered-cubic magnets with significant antiferromagnetic Kitaev exchange, which indicates that spacing magnetic ions far apart may be a promising design principle for uncovering additional Kitaev materials},

  doi          = {10.1103/PhysRevB.99.134417},

  journal      = {Physical Review B},

  number       = 13,

  volume       = 99,

  place        = {United States},

  year         = {Thu Apr 11 00:00:00 EDT 2019},

  month        = {Thu Apr 11 00:00:00 EDT 2019}

}

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journal, July 1976

Lynn, J. W.; Shirane, G.; Blume, M.
Physical Review Letters, Vol. 37, Issue 3
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Excitations in the field-induced quantum spin liquid state of α-RuCl3
text, January 2018

Banerjee, A.; Lampen-Kelley, P.; Knolle, Johannes
Apollo - University of Cambridge Repository
DOI: 10.17863/cam.11029

Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K-edge resonant inelastic x-ray scattering
text, January 2018

Xingye, Lu,; Paul, Olalde-Velasco,; Yaobo, Huang,
American Physical Society
DOI: 10.5167/uzh-157581

Neutron scattering in the proximate quantum spin liquid α-RuCl3.
text, January 2017

Banerjee, Arnab; Yan, Jiaqiang; Knolle, Johannes
Apollo - University of Cambridge Repository
DOI: 10.17863/cam.11028

Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
text, January 2012

Clancy, J. P.; Chen, N.; Kim, C. Y.
arXiv
DOI: 10.48550/arxiv.1205.6540

Heisenberg-Kitaev model on hyperhoneycomb lattice
text, January 2013

Lee, Eric Kin-Ho; Schaffer, Robert; Bhattacharjee, Subhro
arXiv
DOI: 10.48550/arxiv.1308.6592

Three dimensional quantum spin liquids in models of harmonic-honeycomb iridates and phase diagram in an infinite-D approximation
text, January 2013

Kimchi, Itamar; Analytis, James G.; Vishwanath, Ashvin
arXiv
DOI: 10.48550/arxiv.1309.1171

Global phase diagram, possible chiral spin liquid and topological superconductivity in the triangular Kitaev-Heisenberg model
text, January 2014

Li, Kai; Yu, Shun-Li; Li, Jian-Xin
arXiv
DOI: 10.48550/arxiv.1409.7820

Density-matrix renormalization group study of Kitaev-Heisenberg model on the triangular lattice
text, January 2015

Shinjo, Kazuya; Sota, Shigetoshi; Yunoki, Seiji
arXiv
DOI: 10.48550/arxiv.1512.02334

Destabilization of magnetic order in a dilute Kitaev spin liquid candidate
text, January 2016

Lampen-Kelley, P.; Banerjee, A.; Aczel, A. A.
arXiv
DOI: 10.48550/arxiv.1612.07202

Models and Materials for Generalized Kitaev Magnetism
text, January 2017

Winter, Stephen M.; Tsirlin, Alexander A.; Daghofer, Maria
arXiv
DOI: 10.48550/arxiv.1706.06113

Possibility to realize spin-orbit-induced correlated physics in iridium fluorides
text, January 2017

Rossi, M.; Retegan, M.; Giacobbe, C.
arXiv
DOI: 10.48550/arxiv.1709.09027

Dispersive Magnetic and Electronic Excitations in Iridate Perovskites Probed with Oxygen $K$-Edge Resonant Inelastic X-ray Scattering
text, January 2017

Lu, Xingye; Olalde-Velasco, Paul; Huang, Yaobo
arXiv
DOI: 10.48550/arxiv.1712.06895

Pressure-driven collapse of the relativistic electronic ground state in a honeycomb iridate
text, January 2018

Clancy, J. P.; Gretarsson, H.; Sears, J. A.
arXiv
DOI: 10.48550/arxiv.1803.04056

Anyons in an exactly solved model and beyond
text, January 2005

Kitaev, Alexei
arXiv
DOI: 10.48550/arxiv.cond-mat/0506438

Works referencing / citing this record:

The effect of carrier doping on magnetism and electronic behavior in double perovskite La ₂ ZnIrO ₆
journal, December 2019

Gao, Yuxia; Ashtar, Malik; Xu, Longmeng
Journal of Physics: Condensed Matter, Vol. 32, Issue 10
DOI: 10.1088/1361-648x/ab5597

Spin-orbit entangled $j = \frac{1}{2}$ moments in ${Ba}_{2} {CeIrO}_{6}$ : A frustrated fcc quantum magnet
journal, August 2019

Revelli, A.; Loo, C. C.; Kiese, D.
Physical Review B, Vol. 100, Issue 8
DOI: 10.1103/physrevb.100.085139

Study of nontrivial magnetism in $3 d − 5 d$ transition metal based double perovskites
journal, February 2020

Ganguly, Shreemoyee; Bhowal, Sayantika
Physical Review B, Vol. 101, Issue 8
DOI: 10.1103/physrevb.101.085104

Kitaev magnetism and fractionalized excitations in double perovskite $S m_{2} ZnIr O_{6}$
journal, January 2020

Singh, Birender; Vogl, M.; Wurmehl, S.
Physical Review Research, Vol. 2, Issue 1
DOI: 10.1103/physrevresearch.2.013040

Octupolar order in d-orbital Mott insulators
text, January 2019

Paramekanti, Arun; Maharaj, Dalini D.; Gaulin, Bruce D.
arXiv
DOI: 10.48550/arxiv.1909.03089

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Title: Revisiting the Kitaev material candidacy of Ir 4 + double perovskite iridates

Abstract

Citation Formats

Models and materials for generalized Kitaev magnetism journal, November 2017

Anyons in an exactly solved model and beyond journal, January 2006

Heisenberg-Kitaev model on the hyperhoneycomb lattice journal, January 2014

Global phase diagram, possible chiral spin liquid, and topological superconductivity in the triangular Kitaev–Heisenberg model journal, April 2015

Magnetic orders proximal to the Kitaev limit in frustrated triangular systems: Application to Ba 3 IrTi 2 O 9 journal, October 2015

Spin-orbit physics of j = 1 2 Mott insulators on the triangular lattice journal, April 2015

Density-Matrix Renormalization Group Study of Kitaev–Heisenberg Model on a Triangular Lattice journal, November 2016

Kitaev-Heisenberg models for iridates on the triangular, hyperkagome, kagome, fcc, and pyrochlore lattices journal, January 2014

Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models journal, January 2009

Novel J eff = 1 / 2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr 2 IrO 4 journal, August 2008

Antiferromagnetic Mott insulating state in single crystals of the honeycomb lattice material Na 2 IrO 3 journal, August 2010

Possible proximity of the Mott insulating iridate Na 2 IrO 3 to a topological phase: Phase diagram of the Heisenberg-Kitaev model in a magnetic field journal, June 2011

Relevance of the Heisenberg-Kitaev Model for the Honeycomb Lattice Iridates A 2 IrO 3 journal, March 2012

Evolution of magnetism in the single-crystal honeycomb iridates ( Na 1 − x Li x ) 2 Ir O 3 journal, December 2013

α − RuCl 3 : A spin-orbit assisted Mott insulator on a honeycomb lattice journal, July 2014

Monoclinic crystal structure of α − RuCl 3 and the zigzag antiferromagnetic ground state journal, December 2015

Magnetic order in α − RuCl 3 : A honeycomb-lattice quantum magnet with strong spin-orbit coupling journal, April 2015

Proximate Kitaev quantum spin liquid behaviour in a honeycomb magnet journal, April 2016

Hyperhoneycomb Iridate β − Li 2 IrO 3 as a Platform for Kitaev Magnetism journal, February 2015

Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in β − Li 2 IrO 3 : Full solution via magnetic resonant x-ray diffraction journal, November 2014

Realization of a three-dimensional spin–anisotropic harmonic honeycomb iridate journal, June 2014

Noncoplanar and Counterrotating Incommensurate Magnetic Order Stabilized by Kitaev Interactions in γ − Li 2 IrO 3 journal, November 2014

Neutron scattering in the proximate quantum spin liquid α-RuCl 3 journal, June 2017

Scattering Continuum and Possible Fractionalized Excitations in α − RuCl 3 journal, April 2015

Excitations in the field-induced quantum spin liquid state of α-RuCl3 journal, February 2018

Destabilization of Magnetic Order in a Dilute Kitaev Spin Liquid Candidate journal, December 2017

High-pressure magnetization and NMR studies of α − RuCl 3 journal, November 2017

Cu 2 IrO 3 : A New Magnetically Frustrated Honeycomb Iridate journal, October 2017

A spin–orbital-entangled quantum liquid on a honeycomb lattice journal, February 2018

Spin-liquid behavior in J eff = 1 2 triangular lattice compound Ba 3 IrTi 2 O 9 journal, October 2012

Putative spin liquid in the triangle-based iridate Ba 3 IrTi 2 O 9 journal, July 2017

Magnetism and electronic structure of La 2 ZnIrO 6 and La 2 MgIrO 6 : Candidate J eff = 1 2 Mott insulators journal, April 2013

Spin-orbit coupled j eff = 1 / 2 iridium moments on the geometrically frustrated fcc lattice journal, July 2015

Highly anisotropic exchange interactions of j eff = 1 2 iridium moments on the fcc lattice in La 2 B IrO 6 ( B = Mg , Zn ) journal, June 2016

Crystal structures and magnetic properties of La 2 Zn x Mg 1 –x IrO 6 journal, January 1996

Crystal structures and magnetic properties of ordered perovskites Ba2LnIrO6 (Ln = lanthanide) journal, January 2000

The Structure and Magnetic Properties of New Iridium (IV) Perovskites Sr2LnIrO6 (Ln=Ce, Tb) journal, June 1999

ELECTRONIC STRUCTURE AND MAGNETISM IN Ir -BASED DOUBLE-PEROVSKITE Sr 2 CeIrO 6 journal, February 2013

Weak orbital ordering of Ir t 2 g states in the double perovskite Sr 2 CeIrO 6 journal, June 2016

Electronic properties of Ba2LnIrO6 (Ln = La, Ce, Pr, Eu, Ho, Er, Yb, Lu) perovskites journal, January 1995

The Structure and Magnetic Properties of La2MLrO6 with M = Mg, Co, Ni, and Zn journal, April 1995

Magnetic and neutron diffraction study on iridium(IV) perovskites Sr 2 LnIrO 6 (Ln = Ce, Tb) journal, March 2000

Recent advances in magnetic structure determination by neutron powder diffraction journal, October 1993

Electronic structure, local magnetism, and spin-orbit effects of Ir(IV)-, Ir(V)-, and Ir(VI)-based compounds journal, June 2015

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides journal, September 1976

Direct evidence of a zigzag spin-chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation of single-crystal Na 2 IrO 3 journal, May 2012

Structural and magnetic studies of Sr 2 IrO 4 journal, April 1994

Dineodymium magnesium titanate(IV). A Rietveld refinement of neutron powder diffraction data journal, November 1986

The classification of tilted octahedra in perovskites journal, November 1972

Octahedral Tilting in Perovskites. I. Geometrical Considerations journal, February 1997

Local Probe for Spin-Orbit Interaction journal, May 1988

Branching ratio in x-ray absorption spectroscopy journal, August 1988

Linear relation between x-ray absorption branching ratio and valence-band spin-orbit expectation value journal, August 1988

Spin-orbit coupling in iridium-based 5 d compounds probed by x-ray absorption spectroscopy journal, November 2012

High-pressure insulator-to-metal transition in Sr 3 Ir 2 O 7 studied by x-ray absorption spectroscopy journal, January 2018

Pressure-driven collapse of the relativistic electronic ground state in a honeycomb iridate journal, August 2018

Orbital Magnetism and Spin-Orbit Effects in the Electronic Structure of BaIrO 3 journal, November 2010

Testing the Validity of the Strong Spin-Orbit-Coupling Limit for Octahedrally Coordinated Iridate Compounds in a Model System Sr 3 CuIrO 6 journal, October 2012

Longer-range lattice anisotropy strongly competing with spin-orbit interactions in pyrochlore iridates journal, March 2014

CaIrO 3 : A Spin-Orbit Mott Insulator Beyond the j eff = 1 / 2 Ground State journal, April 2014

Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K -edge resonant inelastic x-ray scattering journal, January 2018

Crystal-Field Splitting and Correlation Effect on the Electronic Structure of A 2 IrO 3 journal, February 2013

Possibility to realize spin-orbit-induced correlated physics in iridium fluorides journal, June 2017

Resonant X-Ray Scattering and the j eff = 1 / 2 Electronic Ground State in Iridate Perovskites journal, January 2014

Determination of Hund's coupling in 5 d oxides using resonant inelastic x-ray scattering journal, June 2017

Locking of iridium magnetic moments to the correlated rotation of oxygen octahedra in Sr 2 IrO 4 revealed by x-ray resonant scattering journal, September 2013

Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr2IrO4 journal, March 2009

Long-range magnetic ordering in Na 2 IrO 3 journal, June 2011

Antiferromagnetic order and domains in Sr 3 Ir 2 O 7 probed by x-ray resonant scattering journal, May 2012

Robustness of Basal-Plane Antiferromagnetic Order and the J eff = 1 / 2 State in Single-Layer Iridate Spin-Orbit Mott Insulators journal, March 2013

X-ray absorption near-edge structure calculations beyond the muffin-tin approximation journal, March 2001

Type I antiferromagnetic order in Ba2LuReO6: Exploring the role of structural distortions in double perovskites containing 5d2 ions journal, February 2018

Radial integrals for the magnetic form factor of 5 d transition elements journal, August 2011

The magnetic structure of K 2 IrCl 6 journal, August 1967

Covalency Effects in the Magnetic Form Factor of Ir in K 2 Ir Cl 6 journal, July 1976

Excitations in the field-induced quantum spin liquid state of α-RuCl3 text, January 2018

Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K-edge resonant inelastic x-ray scattering text, January 2018

Title: Revisiting the Kitaev material candidacy of ${Ir}^{4 +}$ double perovskite iridates

Models and materials for generalized Kitaev magnetism
journal, November 2017

Anyons in an exactly solved model and beyond
journal, January 2006

Heisenberg-Kitaev model on the hyperhoneycomb lattice
journal, January 2014

Global phase diagram, possible chiral spin liquid, and topological superconductivity in the triangular Kitaev–Heisenberg model
journal, April 2015

Magnetic orders proximal to the Kitaev limit in frustrated triangular systems: Application to ${Ba}_{3} {IrTi}_{2} O_{9}$
journal, October 2015

Spin-orbit physics of $j = \frac{1}{2}$ Mott insulators on the triangular lattice
journal, April 2015

Density-Matrix Renormalization Group Study of Kitaev–Heisenberg Model on a Triangular Lattice
journal, November 2016

Kitaev-Heisenberg models for iridates on the triangular, hyperkagome, kagome, fcc, and pyrochlore lattices
journal, January 2014

Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
journal, January 2009

Novel $J_{eff} = 1 / 2$ Mott State Induced by Relativistic Spin-Orbit Coupling in ${Sr}_{2} {IrO}_{4}$
journal, August 2008

Antiferromagnetic Mott insulating state in single crystals of the honeycomb lattice material ${Na}_{2} {IrO}_{3}$
journal, August 2010

Possible proximity of the Mott insulating iridate Na $_{2}$ IrO $_{3}$ to a topological phase: Phase diagram of the Heisenberg-Kitaev model in a magnetic field
journal, June 2011

Relevance of the Heisenberg-Kitaev Model for the Honeycomb Lattice Iridates $A_{2} {IrO}_{3}$
journal, March 2012

Evolution of magnetism in the single-crystal honeycomb iridates $({Na}_{1 - x}$ Li $_{x})_{2} Ir O_{3}$
journal, December 2013

$α - {RuCl}_{3}$ : A spin-orbit assisted Mott insulator on a honeycomb lattice
journal, July 2014

Monoclinic crystal structure of $α - {RuCl}_{3}$ and the zigzag antiferromagnetic ground state
journal, December 2015

Magnetic order in $α - {RuCl}_{3}$ : A honeycomb-lattice quantum magnet with strong spin-orbit coupling
journal, April 2015

Proximate Kitaev quantum spin liquid behaviour in a honeycomb magnet
journal, April 2016

Hyperhoneycomb Iridate $β − {Li}_{2} {IrO}_{3}$ as a Platform for Kitaev Magnetism
journal, February 2015

Unconventional magnetic order on the hyperhoneycomb Kitaev lattice in $β − {Li}_{2} {IrO}_{3}$ : Full solution via magnetic resonant x-ray diffraction
journal, November 2014

Realization of a three-dimensional spin–anisotropic harmonic honeycomb iridate
journal, June 2014

Noncoplanar and Counterrotating Incommensurate Magnetic Order Stabilized by Kitaev Interactions in $γ − {Li}_{2} {IrO}_{3}$
journal, November 2014

Neutron scattering in the proximate quantum spin liquid α-RuCl ₃
journal, June 2017

Scattering Continuum and Possible Fractionalized Excitations in $α − {RuCl}_{3}$
journal, April 2015

Excitations in the field-induced quantum spin liquid state of α-RuCl3
journal, February 2018

Destabilization of Magnetic Order in a Dilute Kitaev Spin Liquid Candidate
journal, December 2017

High-pressure magnetization and NMR studies of $α − {RuCl}_{3}$
journal, November 2017

Cu ₂ IrO ₃ : A New Magnetically Frustrated Honeycomb Iridate
journal, October 2017

A spin–orbital-entangled quantum liquid on a honeycomb lattice
journal, February 2018

Spin-liquid behavior in $J_{eff} = \frac{1}{2}$ triangular lattice compound Ba $_{3}$ IrTi $_{2}$ O $_{9}$
journal, October 2012

Putative spin liquid in the triangle-based iridate ${Ba}_{3} {IrTi}_{2} O_{9}$
journal, July 2017

Magnetism and electronic structure of La $_{2}$ ZnIrO $_{6}$ and La $_{2}$ MgIrO $_{6}$ : Candidate $J_{eff} = \frac{1}{2}$ Mott insulators
journal, April 2013

Spin-orbit coupled $j_{eff} = 1 / 2$ iridium moments on the geometrically frustrated fcc lattice
journal, July 2015

Highly anisotropic exchange interactions of $j_{eff} = \frac{1}{2}$ iridium moments on the fcc lattice in ${La}_{2} B {IrO}_{6} (B = Mg, Zn)$
journal, June 2016

Crystal structures and magnetic properties of La ₂ Zn _x Mg _{1 –x} IrO ₆
journal, January 1996

Crystal structures and magnetic properties of ordered perovskites Ba2LnIrO6 (Ln = lanthanide)
journal, January 2000

The Structure and Magnetic Properties of New Iridium (IV) Perovskites Sr2LnIrO6 (Ln=Ce, Tb)
journal, June 1999

ELECTRONIC STRUCTURE AND MAGNETISM IN Ir -BASED DOUBLE-PEROVSKITE Sr ₂ CeIrO ₆
journal, February 2013

Weak orbital ordering of Ir $t_{2 g}$ states in the double perovskite ${Sr}_{2} {CeIrO}_{6}$
journal, June 2016

Electronic properties of Ba2LnIrO6 (Ln = La, Ce, Pr, Eu, Ho, Er, Yb, Lu) perovskites
journal, January 1995

The Structure and Magnetic Properties of La2MLrO6 with M = Mg, Co, Ni, and Zn
journal, April 1995

Magnetic and neutron diffraction study on iridium(IV) perovskites Sr ₂ LnIrO ₆ (Ln = Ce, Tb)
journal, March 2000

Recent advances in magnetic structure determination by neutron powder diffraction
journal, October 1993

Electronic structure, local magnetism, and spin-orbit effects of Ir(IV)-, Ir(V)-, and Ir(VI)-based compounds
journal, June 2015

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976

Direct evidence of a zigzag spin-chain structure in the honeycomb lattice: A neutron and x-ray diffraction investigation of single-crystal Na $_{2}$ IrO $_{3}$
journal, May 2012

Structural and magnetic studies of ${Sr}_{2}$ ${IrO}_{4}$
journal, April 1994

Dineodymium magnesium titanate(IV). A Rietveld refinement of neutron powder diffraction data
journal, November 1986

The classification of tilted octahedra in perovskites
journal, November 1972

Octahedral Tilting in Perovskites. I. Geometrical Considerations
journal, February 1997

Local Probe for Spin-Orbit Interaction
journal, May 1988

Branching ratio in x-ray absorption spectroscopy
journal, August 1988

Linear relation between x-ray absorption branching ratio and valence-band spin-orbit expectation value
journal, August 1988

Spin-orbit coupling in iridium-based 5 $d$ compounds probed by x-ray absorption spectroscopy
journal, November 2012

High-pressure insulator-to-metal transition in ${Sr}_{3} {Ir}_{2} O_{7}$ studied by x-ray absorption spectroscopy
journal, January 2018

Pressure-driven collapse of the relativistic electronic ground state in a honeycomb iridate
journal, August 2018

Orbital Magnetism and Spin-Orbit Effects in the Electronic Structure of ${BaIrO}_{3}$
journal, November 2010

Testing the Validity of the Strong Spin-Orbit-Coupling Limit for Octahedrally Coordinated Iridate Compounds in a Model System ${Sr}_{3} {CuIrO}_{6}$
journal, October 2012

Longer-range lattice anisotropy strongly competing with spin-orbit interactions in pyrochlore iridates
journal, March 2014

${CaIrO}_{3}$ : A Spin-Orbit Mott Insulator Beyond the $j_{eff} = 1 / 2$ Ground State
journal, April 2014

Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen $K$ -edge resonant inelastic x-ray scattering
journal, January 2018

Crystal-Field Splitting and Correlation Effect on the Electronic Structure of $A_{2} {IrO}_{3}$
journal, February 2013

Possibility to realize spin-orbit-induced correlated physics in iridium fluorides
journal, June 2017

Resonant X-Ray Scattering and the $j_{eff} = 1 / 2$ Electronic Ground State in Iridate Perovskites
journal, January 2014

Determination of Hund's coupling in $5 d$ oxides using resonant inelastic x-ray scattering
journal, June 2017

Locking of iridium magnetic moments to the correlated rotation of oxygen octahedra in Sr ₂ IrO ₄ revealed by x-ray resonant scattering
journal, September 2013

Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr2IrO4
journal, March 2009

Long-range magnetic ordering in Na $_{2}$ IrO $_{3}$
journal, June 2011

Antiferromagnetic order and domains in Sr $_{3}$ Ir $_{2}$ O $_{7}$ probed by x-ray resonant scattering
journal, May 2012

Robustness of Basal-Plane Antiferromagnetic Order and the $J_{eff} = 1 / 2$ State in Single-Layer Iridate Spin-Orbit Mott Insulators
journal, March 2013

X-ray absorption near-edge structure calculations beyond the muffin-tin approximation
journal, March 2001

Type I antiferromagnetic order in Ba2LuReO6: Exploring the role of structural distortions in double perovskites containing 5d2 ions
journal, February 2018

Radial integrals for the magnetic form factor of 5 d transition elements
journal, August 2011

The magnetic structure of K ₂ IrCl ₆
journal, August 1967

Covalency Effects in the Magnetic Form Factor of Ir in $K_{2}$ Ir ${Cl}_{6}$
journal, July 1976

Excitations in the field-induced quantum spin liquid state of α-RuCl3
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Dispersive magnetic and electronic excitations in iridate perovskites probed by oxygen K-edge resonant inelastic x-ray scattering
text, January 2018

Neutron scattering in the proximate quantum spin liquid α-RuCl3.
text, January 2017

Spin-Orbit Coupling in Iridium-Based 5d Compounds Probed by X-ray Absorption Spectroscopy
text, January 2012