by Sala, M. Moretti, Ohgushi, K., Al-Zein, A., Hirata, Y. and Monaco, G. and Krisch, M.
Abstract:
In CaIrO3, electronic correlation, spin-orbit coupling, and tetragonal crystal field splitting are predicted to be of comparable strength. However, the nature of its ground state is still an object of debate, with contradictory experimental and theoretical results. We probe the ground state of CaIrO3 and assess the effective tetragonal crystal field splitting and spin-orbit coupling at play in this system by means of resonant inelastic x-ray scattering. We conclude that insulating CaIrO3 is not a j(eff) = 1/2 iridate and discuss the consequences of our finding to the interpretation of previous experiments. In particular, we clarify how the Mott insulating state in iridates can be readily extended beyond the j(eff) = 1/2 ground state.
Reference:
CaIrO3: A Spin-Orbit Mott Insulator Beyond the j(eff)=1/2 Ground State (Sala, M. Moretti, Ohgushi, K., Al-Zein, A., Hirata, Y. and Monaco, G. and Krisch, M.), In PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, volume 112, 2014.
Bibtex Entry:
@article{ ISI:000335816700018, Author = {Sala, M. Moretti and Ohgushi, K. and Al-Zein, A. and Hirata, Y. and Monaco, G. and Krisch, M.}, Title = {{CaIrO3: A Spin-Orbit Mott Insulator Beyond the j(eff)=1/2 Ground State}}, Journal = {{PHYSICAL REVIEW LETTERS}}, Year = {{2014}}, Volume = {{112}}, Number = {{17}}, Month = {{APR 30}}, Abstract = {{In CaIrO3, electronic correlation, spin-orbit coupling, and tetragonal crystal field splitting are predicted to be of comparable strength. However, the nature of its ground state is still an object of debate, with contradictory experimental and theoretical results. We probe the ground state of CaIrO3 and assess the effective tetragonal crystal field splitting and spin-orbit coupling at play in this system by means of resonant inelastic x-ray scattering. We conclude that insulating CaIrO3 is not a j(eff) = 1/2 iridate and discuss the consequences of our finding to the interpretation of previous experiments. In particular, we clarify how the Mott insulating state in iridates can be readily extended beyond the j(eff) = 1/2 ground state.}}, 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; Al-Zein, A.; Monaco, G.; Krisch, M., European Synchrotron Radiat Facil, F-38043 Grenoble, France. Ohgushi, K.; Hirata, Y., Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan. Monaco, G., Univ Trento, Dipartimento Fis, I-38123 Povo, TN, Italy.}}, DOI = {{10.1103/PhysRevLett.112.176402}}, Article-Number = {{176402}}, ISSN = {{0031-9007}}, EISSN = {{1079-7114}}, Research-Areas = {{Physics}}, Web-of-Science-Categories = {{Physics, Multidisciplinary}}, Author-Email = {{marco.moretti@esrf.fr}}, ResearcherID-Numbers = {{Sala, Marco Moretti/H-1034-2014 Ohgushi, Kenya/K-5319-2012 Moretti, Marco/AAF-9255-2019 Krisch, Michael H/U-5662-2018 Monaco, Giulio/AAW-4387-2020 Zein, Ali Al/F-4393-2019}}, ORCID-Numbers = {{Sala, Marco Moretti/0000-0002-9744-9976 Moretti, Marco/0000-0002-9744-9976 Krisch, Michael H/0000-0001-7423-1715 Monaco, Giulio/0000-0003-2497-6422 }}, Funding-Acknowledgement = {{{[}26287073]; Grants-in-Aid for Scientific ResearchMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) {[}26287073] Funding Source: KAKEN}}, Funding-Text = {{Enlightening discussions with G. Jackeli are kindly acknowledged. The experiment largely profited from the technical support and expertise of R. Verbeni and C. Henriquet. The work in Japan was partly supported by Grant-in-Aid for Scientific Research (B) (Grant No. 26287073).}}, Number-of-Cited-References = {{35}}, Times-Cited = {{53}}, Usage-Count-Last-180-days = {{1}}, Usage-Count-Since-2013 = {{96}}, Journal-ISO = {{Phys. Rev. Lett.}}, Doc-Delivery-Number = {{AH0NM}}, Unique-ID = {{ISI:000335816700018}}, DA = {{2020-12-22}}, }
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