Abstract
Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} is a quasi-one-dimensional magnet, which consists of the ferromagnetic edge-sharing CuO{sub 2} chains. It was previously reported from neutron inelastic scattering experiments in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} up to {approx}14 meV that in the magnetically ordered state there is an anomalous broadening of spin-wave excitations along the chain, which is caused mainly by the antiferromagnetic interchain interactions [M. Matsuda et al.: Phys. Rev. B 63 (2001) 180403 (R)]. In this study we extended an energy range of the measurement up to {approx}25meV. The experimental result suggests that there exist two excitation modes, which is consistent with a theoretical result qualitatively. One mode corresponds to the relatively sharp spin-wave excitations, which broaden with increasing q{sub chain} and disappear around q{sub chain} {approx}0.2 r.l.u. and {omega}{approx}10meV. Another one corresponds to the very broad excitations apparent at q{sub chain}{approx}0.2-0.3 r.l.u. and {omega} {approx} 12-25 meV. (author)
Matsuda, Masaaki;
Kakurai, Kazuhisa;
[1]
Yethiraj, Mohana;
[2]
Oka, Kunihiko
[3]
- Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
- Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN (United States)
- National Inst. of Advanced Industrial Science and Technology, Tsukuba, Ibaraki (Japan)
Citation Formats
Matsuda, Masaaki, Kakurai, Kazuhisa, Yethiraj, Mohana, and Oka, Kunihiko.
High energy magnetic excitations from the edge-sharing CuO{sub 2} chains in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10}.
Japan: N. p.,
2005.
Web.
doi:10.1143/JPSJ.74.1578.
Matsuda, Masaaki, Kakurai, Kazuhisa, Yethiraj, Mohana, & Oka, Kunihiko.
High energy magnetic excitations from the edge-sharing CuO{sub 2} chains in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10}.
Japan.
https://doi.org/10.1143/JPSJ.74.1578
Matsuda, Masaaki, Kakurai, Kazuhisa, Yethiraj, Mohana, and Oka, Kunihiko.
2005.
"High energy magnetic excitations from the edge-sharing CuO{sub 2} chains in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10}."
Japan.
https://doi.org/10.1143/JPSJ.74.1578.
@misc{etde_20620449,
title = {High energy magnetic excitations from the edge-sharing CuO{sub 2} chains in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10}}
author = {Matsuda, Masaaki, Kakurai, Kazuhisa, Yethiraj, Mohana, and Oka, Kunihiko}
abstractNote = {Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} is a quasi-one-dimensional magnet, which consists of the ferromagnetic edge-sharing CuO{sub 2} chains. It was previously reported from neutron inelastic scattering experiments in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} up to {approx}14 meV that in the magnetically ordered state there is an anomalous broadening of spin-wave excitations along the chain, which is caused mainly by the antiferromagnetic interchain interactions [M. Matsuda et al.: Phys. Rev. B 63 (2001) 180403 (R)]. In this study we extended an energy range of the measurement up to {approx}25meV. The experimental result suggests that there exist two excitation modes, which is consistent with a theoretical result qualitatively. One mode corresponds to the relatively sharp spin-wave excitations, which broaden with increasing q{sub chain} and disappear around q{sub chain} {approx}0.2 r.l.u. and {omega}{approx}10meV. Another one corresponds to the very broad excitations apparent at q{sub chain}{approx}0.2-0.3 r.l.u. and {omega} {approx} 12-25 meV. (author)}
doi = {10.1143/JPSJ.74.1578}
journal = []
issue = {5}
volume = {74}
journal type = {AC}
place = {Japan}
year = {2005}
month = {May}
}
title = {High energy magnetic excitations from the edge-sharing CuO{sub 2} chains in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10}}
author = {Matsuda, Masaaki, Kakurai, Kazuhisa, Yethiraj, Mohana, and Oka, Kunihiko}
abstractNote = {Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} is a quasi-one-dimensional magnet, which consists of the ferromagnetic edge-sharing CuO{sub 2} chains. It was previously reported from neutron inelastic scattering experiments in Ca{sub 2}Y{sub 2}Cu{sub 5}O{sub 10} up to {approx}14 meV that in the magnetically ordered state there is an anomalous broadening of spin-wave excitations along the chain, which is caused mainly by the antiferromagnetic interchain interactions [M. Matsuda et al.: Phys. Rev. B 63 (2001) 180403 (R)]. In this study we extended an energy range of the measurement up to {approx}25meV. The experimental result suggests that there exist two excitation modes, which is consistent with a theoretical result qualitatively. One mode corresponds to the relatively sharp spin-wave excitations, which broaden with increasing q{sub chain} and disappear around q{sub chain} {approx}0.2 r.l.u. and {omega}{approx}10meV. Another one corresponds to the very broad excitations apparent at q{sub chain}{approx}0.2-0.3 r.l.u. and {omega} {approx} 12-25 meV. (author)}
doi = {10.1143/JPSJ.74.1578}
journal = []
issue = {5}
volume = {74}
journal type = {AC}
place = {Japan}
year = {2005}
month = {May}
}