A j eff= 1 / 2 pseudospinon continuum in CaIrO 3

Matteo Rossi, Pietro Marabotti, Yasuyuki Hirata, Giulio Monaco, Michael Krisch, Kenya Ohgushi, Krzysztof Wohlfeld, Jeroen van den Brink, Marco Moretti Sala

Research output: Contribution to journalArticlepeer-review

Abstract

In so-called jeff= 1 / 2 systems, including some iridates and ruthenates, the coherent superposition of t2 g orbitals in the ground state gives rise to hopping processes that strongly depend on the bond geometry. Resonant inelastic X-ray scattering measurements on CaIrO3 reveal a prototypical jeff= 1 / 2 pseudospinon continuum, a hallmark of one-dimensional (1D) magnetic systems despite its three-dimensional crystal structure. The experimental spectra compare very well to the calculated magnetic dynamical structure factor of weakly coupled spin-1/2 chains. We attribute the onset of such quasi-1D magnetism to the fundamental difference in the magnetic interactions between the jeff= 1 / 2 pseudospins along the corner- and edge-sharing bonds in CaIrO3.

Original languageEnglish
Article number676
JournalEuropean Physical Journal Plus
Volume135
Issue number8
DOIs
Publication statusPublished - 2020 Aug 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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