Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6

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

doi:10.1103/PhysRevB.89.081104

Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6

Strongly Correlated Electrons 2014-02-18 v1 Materials Science Other Condensed Matter

Authors: 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

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Abstract

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 evidence for this state in Sr2IrO4, and additional iridates, has been presented. All the candidates, however, deviate from the cubic crystal field required to provide an unmixed canonical Jeff=1/2 state, impacting the development of a robust model of this novel insulating and magnetic state. We present results that not only show Ca4IrO6 hosts the state, but furthermore uniquely resides close to the ideal case required for an unmixed Jeff=1/2 state.

Keywords

Jeff=1/2 state Mott insulator spin-orbit coupling cubic crystal field Ca4IrO6 5d transition metal oxides iridates Coulomb interaction

Cite

@article{arxiv.1309.5411,
  title  = {Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6},
  author = {S. Calder and G. -X Cao and S. Okamoto and J. W. Kim and V. R. Cooper and Z. Gai and B. C. Sales and M. D. Lumsden and D. Mandrus and A. D. Christianson},
  journal= {arXiv preprint arXiv:1309.5411},
  year   = {2014}
}

Jeff=1/2 Mott spin-orbit insulating state close to the cubic limit in Ca4IrO6

Abstract

Keywords

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