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|Title:||A Heisenberg model of a two-component magnetic superlattice|
|Citation:||Chen, F., Sy, H.K. (1995). A Heisenberg model of a two-component magnetic superlattice. Journal of Physics: Condensed Matter 7 (32) : 6591-6600. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/7/32/024|
|Abstract:||We study an (m, n) superlattice consisting of two alternating magnetic materials (components) of m and n atomic layers, respectively. The superlattice is modelled by a simple cubic lattice of spins coupled via nearest-neighbour exchange (Heisenberg model). Using recurrence relations, the dispersion equations of surface and bulk spin waves are derived for both finite and semi-infinite systems. The numerical results of the (1, 1), (3, 1) and (3, 2) cases are shown graphically. For a range of the surface exchange Js, the maximum number of surface modes, equal to m+n, is obtained.|
|Source Title:||Journal of Physics: Condensed Matter|
|Appears in Collections:||Staff Publications|
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