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Iridates with the 5$d^4$ electronic configuration have attracted recent interest due to reports of magnetically-ordered ground states despite longstanding expectations that their strong spin-orbit coupling would generate a $J = 0$…

Motivated by recent experiments exploring the spin-orbit-coupled magnetism in $4d$- and $5d$-band transition metal oxides, we study magnetic interactions in Ir- and Rh-based compounds. In these systems, the comparable strength of spin-orbit…

Strongly Correlated Electrons · Physics 2015-06-17 Natalia B. Perkins , Yuriy Sizyuk , Peter Wölfle

Strong spin-orbit coupling (SOC) effects of heavy $d$-orbital elements have long been neglected in describing the ground states of their compounds thereby overlooking a variety of fascinating and yet unexplored magnetic and electronic…

On the basis of the multi-orbital dynamical mean field theory, a three-orbital Hubbard model with a relativistic spin-orbit coupling (SOC) is studied at five electrons per site. The numerical calculations are performed by employing the…

Strongly Correlated Electrons · Physics 2015-06-23 Toshihiro Sato , Tomonori Shirakawa , Seiji Yunoki

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 object of debate, with contradictory experimental and…

Strongly Correlated Electrons · Physics 2014-05-02 M. Moretti Sala , K. Ohgushi , A. Al-Zein , Y. Hirata , G. Monaco , M. Krisch

Iridium oxides (iridates) provide a good platform to study the delicate interplay between spin-orbit coupling (SOC) interactions, electron correlation effects, Hund's coupling and lattice degree of freedom. However, overwhelming…

Strongly Correlated Electrons · Physics 2024-01-09 Xujia Gong , Carmine Autieri , Huanfu Zhou , Jiafeng Ma , Xin Tang , Xiaojun Zheng , Xing Ming

Recent years have seen many examples of how the strong spin-orbit coupling (SOC) present in iridates can stabilize new emergent states that are difficult or impossible to realize in more conventional materials. In this review we outline a…

Strongly Correlated Electrons · Physics 2019-06-10 Lin Hao , D. Meyers , M. P. M. Dean , Jian Liu

In condensed-matter physics spin-orbit coupling (SOC) is a fundamental physical interaction, which describes how the electrons' spin couples to their orbital motion. It is the source of a vast variety of fascinating phenomena in solids such…

Superconductivity · Physics 2023-05-25 Khalil Zakeri , Dominik Rau , Jasmin Jandke , Fang Yang , Wulf Wulfhekel , Christophe Berthod

We have carried out a comparative theoretical study of the electronic structure of the novel one-dimensional Ca$_3$CoRhO$_6$ and Ca$_3$FeRhO$_6$ systems. The insulating antiferromagnetic state for the Ca$_3$FeRhO$_6$ can be well explained…

Strongly Correlated Electrons · Physics 2007-06-21 Hua Wu , Z. Hu , D. I. Khomskii , L. H. Tjeng

There has been a rapidly growing interest on the interplay between spin-orbit coupling (SOC) and Hubbard interaction U in correlated materials. A current consensus is that the stronger the SOC, the smaller is the critical interaction Uc…

Strongly Correlated Electrons · Physics 2013-05-30 M. Ahsan Zeb , Hae-Young Kee

Spin orbit coupling provides a mechanism to lock the momentum of electron to its spin degree, recent years was revealed to be essential in arousing many novel physical behaviors. SrIrO3 is a typical metallic member of the strong spin orbit…

Materials Science · Physics 2018-08-10 Lunyong Zhang , Bin Pang , Y. B. Chen , Yanfeng Chen

We investigate the interplay of spin-orbit coupling (SOC) and electronic correlations in Sr2RuO4 using dynamical mean-field theory. We find that SOC does not affect the correlation-induced renormalizations, which validates the Hund's metal…

Strongly Correlated Electrons · Physics 2018-03-28 Minjae Kim , Jernej Mravlje , Michel Ferrero , Olivier Parcollet , Antoine Georges

The Jeff=1/2 state is manifested in systems with large cubic crystal field splitting and spin-orbit coupling that are comparable to the on-site Coulomb interaction, U. 5d transition metal oxides host parameters in this regime and strong…

Strongly Correlated Electrons · Physics 2014-02-18 S. Calder , G. -X Cao , S. Okamoto , J. W. Kim , V. R. Cooper , Z. Gai , B. C. Sales , M. D. Lumsden , D. Mandrus , A. D. Christianson

We report the structure and magnetic properties of a new iridate compound, SrxLa11-xIr4O24, where the d-electron count of Ir and therefore its number of unpaired electrons can be tuned continuously from 5d5 Ir4+ to 5d4 Ir5+, i.e. from…

Materials Science · Physics 2015-04-14 Brendan F. Phelan , Jason Krizan , Weiwei Xie , Quinn Gibson , R. J. Cava

We report neutron scattering experiments which reveal a large spin gap in the magnetic excitation spectrum of weakly-monoclinic double perovskite Sr2ScOsO6. The spin gap is demonstrative of appreciable spin-orbit-induced anisotropy, despite…

Strongly Correlated Electrons · Physics 2016-07-06 A. E. Taylor , R. Morrow , R. S. Fishman , S. Calder , A. I. Kolesnikov , M. D. Lumsden , P. M. Woodward , A. D. Christianson

Spin-orbit coupling (SOC) is pivotal for various fundamental spin-dependent phenomena in solids and their technological applications. In semiconductors, these phenomena have been so far studied in relatively weak electron-electron…

Mesoscale and Nanoscale Physics · Physics 2021-06-09 D. Maryenko , M. Kawamura , A. Ernst , V. K. Dugaev , E. Ya. Sherman , M. Kriener , M. S. Bahramy , Y. Kozuka , M. Kawasaki

The influence of spin-orbit coupling (SOC) on the physical properties of the 5d2 system Sr2MgOsO6 is probed via a combination of magnetometry, specific heat measurements, elastic and inelastic neutron scattering, and density functional…

Electrical control of structural and physical properties is a long-sought, but elusive goal of contemporary science and technology. We demonstrate that a combination of strong spin-orbit interactions (SOI) and a canted antiferromagnetic…

Strongly Correlated Electrons · Physics 2018-01-08 G. Cao , J. Terzic , H. D. Zhao , H. Zheng , L. E. De Long , Peter S. Riseborough

We investigated electronic structure of 5d transition-metal oxide Sr2IrO4 using angle-resolved photoemission, optical conductivity, and x-ray absorption measurements and first-principles band calculations. The system was found to be well…

Strongly Correlated Electrons · Physics 2009-11-13 B. J. Kim , Hosub Jin , S. J. Moon , J. -Y. Kim , B. -G. Park , C. S. Leem , Jaeju Yu , T. W. Noh , C. Kim , S. -J. Oh , J. -H. Park , V. Durairaj , G. Cao , E. Rotenberg

By combining 5d transition-metal oxides showing pronounced spin-orbit interactions and oxide-based heterostructures, we propose rutile-based IrO2/TiO2 superlattices as promising candidates for unconventional electronic properties. By means…

Strongly Correlated Electrons · Physics 2017-02-16 Xing Ming , Kunihiko Yamauchi , Tamio Oguchi , Silvia Picozzi