Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/10490
Title: Spin Waves in Canted Phases: An Application to Doped Manganites
Author: Román Faúndez, José María
Soto Riera, Joan
Keywords: Materials magnètics
Teoria de camps (Física)
Spin (Física nuclear)
Magnetic materials
Field theory (Physics)
Nuclear spin
Issue Date: 2000
Publisher: The American Physical Society
Abstract: We present the effective lagrangian for low energy and momentum spin waves in canted phases at next to leading order in the derivative expansion. The symmetry breaking pattern SU(2) --> 1 of the internal spin group and that of the crystallographic space group imply that there is one ferromagnetic and one antiferromagnetic spin wave. The interaction of the spin waves with the charge carriers is also discussed for canted, ferromagnetic and antiferromagnetic phases. All this together allows us to write the doping dependence of the dispersion relation parameters for doped manganites. We point out that the spin waves posses distinctive characteristics which may allow us to experimentally differentiate canted phases from phase separation regions in doped manganites.
We present the effective lagrangian for low energy and momentum spin waves in canted phases at next to leading order in the derivative expansion. The symmetry breaking pattern SU(2) --> 1 of the internal spin group and that of the crystallographic space group imply that there is one ferromagnetic and one antiferromagnetic spin wave. The interaction of the spin waves with the charge carriers is also discussed for canted, ferromagnetic and antiferromagnetic phases. All this together allows us to write the doping dependence of the dispersion relation parameters for doped manganites. We point out that the spin waves posses distinctive characteristics which may allow us to experimentally differentiate canted phases from phase separation regions in doped manganites.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.62.3300
It is part of: Physical Review B, 2000, vol. 62, núm. 5, p. 3300-3315
Related resource: http://dx.doi.org/10.1103/PhysRevB.62.3300
http://dx.doi.org/10.1103/PhysRevB.62.3300
URI: http://hdl.handle.net/2445/10490
ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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