| SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN, B.J. KIM, M. LE TACON and B. KEIMER. Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4. Physical Review Letters. COLLEGE PK, MD USA: The Americal Physical Society, vol. 119, No 6, p. "067201-1"-"067201-5", 5 pp. ISSN 0031-9007. doi:10.1103/PhysRevLett.119.067201. 2017. |
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@article{1403072,
author = {Souliou, S.M. and Chaloupka, Jiří and Khaliullin, G. and Ryu, G. and Jain, A. and Kim, B.J. and Le Tacon, M. and Keimer, B.},
article_location = {COLLEGE PK, MD USA},
article_number = {6},
doi = {http://dx.doi.org/10.1103/PhysRevLett.119.067201},
keywords = {ruthenates; Raman scattering; magnetic model; magnon; amplitude mode},
language = {eng},
issn = {0031-9007},
journal = {Physical Review Letters},
title = {Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4},
url = {https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201},
volume = {119},
year = {2017}
}
TY - JOUR
ID - 1403072
AU - Souliou, S.M. - Chaloupka, Jiří - Khaliullin, G. - Ryu, G. - Jain, A. - Kim, B.J. - Le Tacon, M. - Keimer, B.
PY - 2017
TI - Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4
JF - Physical Review Letters
VL - 119
IS - 6
SP - "067201-1"-"067201-5"
EP - "067201-1"-"067201-5"
PB - The Americal Physical Society
SN - 00319007
KW - ruthenates
KW - Raman scattering
KW - magnetic model
KW - magnon
KW - amplitude mode
UR - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201
L2 - https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.119.067201
N2 - We present and analyze Raman spectra of the Mott insulator Ca2RuO4, whose quasi-two-dimensional antiferromagnetic order has been described as a condensate of low-lying spin-orbit excitons with angular momentum J(eff) = 1. In the A(g) polarization geometry, the amplitude (Higgs) mode of the spin-orbit condensate is directly probed in the scalar channel, thus avoiding infrared-singular magnon contributions. In the B-1g geometry, we observe a single-magnon peak as well as two-magnon and two-Higgs excitations. Model calculations using exact diagonalization quantitatively agree with the observations. Together with recent neutron scattering data, our study provides strong evidence for excitonic magnetism in Ca2RuO4 and points out new perspectives for research on the Higgs mode in two dimensions.
ER -
SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN, B.J. KIM, M. LE TACON and B. KEIMER. Raman Scattering from Higgs Mode Oscillations in the Two-Dimensional Antiferromagnet Ca2RuO4. \textit{Physical Review Letters}. COLLEGE PK, MD USA: The Americal Physical Society, vol.~119, No~6, p.~''067201-1''-''067201-5'', 5 pp. ISSN~0031-9007. doi:10.1103/PhysRevLett.119.067201. 2017.
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