SOULIOU, S.M., Jiří CHALOUPKA, G. KHALIULLIN, G. RYU, A. JAIN, B.J. KIM, M. LE TACON a 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, 2017, roč. 119, č. 6, s. "067201-1"-"067201-5", 5 s. ISSN 0031-9007. Dostupné z: https://dx.doi.org/10.1103/PhysRevLett.119.067201. |
Další formáty:
BibTeX
LaTeX
RIS
@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 a 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, 2017, roč.~119, č.~6, s.~''067201-1''-''067201-5'', 5 s. ISSN~0031-9007. Dostupné z: https://dx.doi.org/10.1103/PhysRevLett.119.067201.
|