TY - JOUR
T1 - A j eff= 1 / 2 pseudospinon continuum in CaIrO 3
AU - Rossi, Matteo
AU - Marabotti, Pietro
AU - Hirata, Yasuyuki
AU - Monaco, Giulio
AU - Krisch, Michael
AU - Ohgushi, Kenya
AU - Wohlfeld, Krzysztof
AU - van den Brink, Jeroen
AU - Moretti Sala, Marco
N1 - Funding Information:
M. Rossi and M. Moretti Sala kindly acknowledge C. Henriquet and R. Verbeni for technical assistance during the experiment and D. K. Singh for providing the magnetic susceptibility data of CaIrO. M. Rossi would like to thank S. Toth for helpful discussions. K. Wohlfeld acknowledges support of the National Science Center (NCN), Project No. 2016/22/E/ST3/00560. J.v.d.B acknowledges financial support from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) via SFB1143 project A5 and supported by the DFG through the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter-ct.qmat (EXC 2147, project id 39085490).
Publisher Copyright:
© 2020, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - 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.
AB - 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.
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U2 - 10.1140/epjp/s13360-020-00649-5
DO - 10.1140/epjp/s13360-020-00649-5
M3 - Article
AN - SCOPUS:85089835446
SN - 2190-5444
VL - 135
JO - European Physical Journal Plus
JF - European Physical Journal Plus
IS - 8
M1 - 676
ER -