Hostname: page-component-848d4c4894-5nwft Total loading time: 0 Render date: 2024-05-14T01:11:35.264Z Has data issue: false hasContentIssue false
  • English
  • Français

Calculations of Bulk and Surface Magnetic Polaritons in Modulated Antiferromagnetic / Non-Magnetic Superlattices

Published online by Cambridge University Press:  03 September 2012

Fred Lacy ,
Ernest L. Carter Jr  and
Steven L. Richardson
Fred Lacy
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
Ernest L. Carter Jr
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
Steven L. Richardson
Affiliation:
Department of Electrical Engineering and Materials Science Research Center, School of Engineering, Howard University, 2300 Sixth Street NW, Washington, DC 20059
Get access

Abstract

Recent advances in molecular beam epitaxy have renewed research on the physics of artificially structured magnetic superlattices. In particular, there has been much theoretical research on the propagation of magnetic spin waves or magnetic polaritons in magnetic superlattices.1 In this work, we have studied the effect of modulating both the period of an antiferromagnetic/non-Magnetic semi-infinite superlattice and the relative thickness of its individual layers to see how the dispersion relationships co (k) for bulk and surface magnetic polaritons are effected. We have also calculated the effect of an external magnetic field on (u (k) and our calculation goes beyond the magnetostatic approximation by taking retardation effects into account.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 313: Symposium Q1 – Magnetic Ultrathin Films, Multilayers and Surfaces/Magnetic Interfaces-Physics and Characterizations , 1993 , 65
Copyright
Copyright © Materials Research Society 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 Cottam, M. G. and Tilley, D. R., Introduction to Surface and Superlattice Excitations. (Cambridge University Press, Cambridge, 1989);Google Scholar
Camley, R. E. and Mills, D. L., Phys. Rev. B 26, 1280 (1982).Google Scholar
2 Barnás, J., J. Phys. C: Solid State Phys. 21, 1021 (1988);Google Scholar
Barnás, J., J. Phys. C: Solid State Phys., 21, 4097 (1988);Google Scholar
Barnás, J., J. Phys.: Condens. Matter 2, 7173 (1990).Google Scholar
3 Oliveira, F. A., Solid State Commun. 78, 759 (1991).Google Scholar
4 Barnás, J., Solid State Commun. 61, 405 (1987).Google Scholar
5 Oliveros, M. C., Almeida, N. S., Tilley, D. R., Thomas, J., and Camley, R. E., J. Phys.: Condens. Matter 4, 8497, (1992). F. Lacy, E. L. Carter, Jr, and S. L. Richardson (to be published).Google Scholar