Energy of spin wave excitations in nickel monolayers

The spin wave stiffness constant D(q) of unsupported fcc (100), (110), and (111) Ni monolayers is calculated for different directions q, of spin wave propagation. It is shown that D is isotropic for the (100) and (111) orientations, and highly anisotropic for the (110) orientation. Results indicate...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 1995-05, Vol.7 (18), p.3453-3460, Article 3453
Main Authors: Costa, M V Tovar, Muniz, R B, Castro, J d'Albuquerque e
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic properties of monolayers and thin films
Magnetic properties of surface, thin films and multilayers
Magnetically ordered materials: other intrinsic properties
Metals. Metallurgy
Physics
Spin waves
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Summary:The spin wave stiffness constant D(q) of unsupported fcc (100), (110), and (111) Ni monolayers is calculated for different directions q, of spin wave propagation. It is shown that D is isotropic for the (100) and (111) orientations, and highly anisotropic for the (110) orientation. Results indicate that the strength of the exchange coupling between nearest neighbour magnetic moments is quite sensitive to the effective space dimensionality as well as the crystalline structure of the system.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/7/18/009