Magnon dressing by orbital excitations in ferromagnetic planes of K2CuF4 and LaMnO3
نویسندگان
چکیده
منابع مشابه
Orbital Excitations in LaMnO3
We study the recently observed orbital excitations, orbitons, and treat electron-electron correlations and lattice dynamics on an equal footing. It is shown that the orbiton energy and dispersion are determined by both correlations and lattice vibrations. The electron-phonon coupling causes satellite structures in the orbiton spectral function and the elementary excitations of the system are mi...
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T. N. Stanislavchuk,1,* Yazhong Wang,2 Y. Janssen,3 G. L. Carr,4 S.-W. Cheong,2 and A. A. Sirenko1 3 1Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102, USA 4 2Department of Physics and Astronomy, Rutgers Center for Emergent Materials, Rutgers University, Piscataway, New Jersey 08854, USA 5 3Department of Chemistry, Stony Brook University, Stony Brook, New York...
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We apply the dressing method to construct new classical string solutions describing various scattering and bound states of magnons. These solutions carry one, two or three SO(6) charges and correspond to multi-soliton configurations in the generalized sineGordon models.
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Materials, consisting of Jahn-Teller (JT) ions, such as cuprates and manganites, display many outstanding properties, including high temperature superconductivity and colossal magnetoresistance. There, the role of JT effect, although widely recognized, is still elusive. Here we show that these materials have vibronic excitations, related to local deformations rotating around JT ions in the dyna...
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We present a theory for spin excitations in ferromagnetic metallic manganites and demonstrate that orbital fluctuations have strong effects on the magnon dynamics in the case these compounds are close to a transition to an orbital ordered state. In particular we show that the scattering of the spin excitations by low-lying orbital modes with cubic symmetry causes both the magnon softening and d...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2019
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aaf0d5