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Acta Physica Sinica (Overseas Edition), 1996, Vol. 5(4): 300-305    DOI: 10.1088/1004-423X/5/4/007
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

INFLUENCE OF THE SUBSTRATE ON THE MAGNETOSTATIC MODES OF A FINITE SUPERLATTICE

LI BIAO (李飚), YANG JIE (杨杰), SHEN JUE-LIAN (沈觉涟)
Institute of Physics, Academia Sinica, Beijing 100080, China
Abstract  In a finite layered system, the substrate influences the spectra of the collective excitations. We solve the dispersion relations for magnetostatic modes in a finite Cd0.30Mn0.70Te-Cd0.89Mn0.11Te multilayer structure as a prototype antiferromagnetic and paramagnetic su-perlattice grown on the top of a nonmagnetic or a paramagnetic substrate. In perpendicular magnetization geometry where the saturation magnetization lies along the growth axis of the layered structure, surface modes appear in the spectra when the substrate is paramagnetic but disappear when the substrate is nonmagnetic. At the same time, the bands of bulk modes in the spectra are independent of change of substrates.
Received:  17 May 1995      Accepted manuscript online: 
PACS:  75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))  
  75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects)  
  75.50.Ee (Antiferromagnetics)  
  75.70.Rf (Surface magnetism)  

Cite this article: 

LI BIAO (李飚), YANG JIE (杨杰), SHEN JUE-LIAN (沈觉涟) INFLUENCE OF THE SUBSTRATE ON THE MAGNETOSTATIC MODES OF A FINITE SUPERLATTICE 1996 Acta Physica Sinica (Overseas Edition) 5 300

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