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Phonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature
Alternative TitlePhonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature
Cheng TaiMin
2007
Source PublicationACTA PHYSICA SINICA
ISSN1000-3290
Volume56Issue:2Pages:1066-1074
AbstractA magnon-phonon interaction model is developed on the basis of two-dimensional square Heisenberg ferromagnetic system. The transverse acoustic phonon damping and longitudinal acoustic phonon damping are studied through Matsubara Green function theory, and transverse acoustic phonon damping and longitudinal acoustic phonon damping curves are calculated on the main symmetric point and line in the first Brillouin zone. It's found that in the first Brillouin zone, on line A, there is no damping for the transverse acoustic phonon, on line Z, there is no damping for longitudinal acoustic phonon. In the first Brillouin zone, the transverse acoustic phonon damping is one order larger than the longitudinal acoustic phonon damping. The influences of transverse acoustic phonon damping and longitudinal acoustic phonon damping for different parameters on them are also illustrated in this article. According to the relationship between phonon damping and phonon lifetime, and the relationship between phonon damping and phonon density of state, the lifetime and density of state for transverse acoustic phonon and longitudinal acoustic phonon is discussed.
KeywordDENSITY-OF-STATES INVAR ALLOY LATTICE-DYNAMICS EXCITATION MAGNON FE86CO4ZR10 MAGNETISM MECHANISM FE3PT magnon-phonon interaction transverse acoustic phonon damping longitudinal acoustic phonon damping phonon lifetime
Indexed ByCSCD
Language英语
CSCD IDCSCD:2792197
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157797
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
Cheng TaiMin. Phonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature[J]. ACTA PHYSICA SINICA,2007,56(2):1066-1074.
APA Cheng TaiMin.(2007).Phonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature.ACTA PHYSICA SINICA,56(2),1066-1074.
MLA Cheng TaiMin."Phonon damping in two-dimensional Heisenberg ferromagnetic system at finite temperature".ACTA PHYSICA SINICA 56.2(2007):1066-1074.
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