Ground-State Properties and Spin Waves in Ultrathin Fe Films Covered with Magnetic and Nonmagnetic Materials |
R. Ćwirkowicz Institute of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland |
Received: March 7, 1995 |
Full Text PDF |
Properties of ultrathin films consisted of 5 and 7 atomic layers of Fe and covered with magnetic (Co) or nonmagnetic (Cu, Ag) materials are investigated within the framework of the multiband model. Ground-state results consistent with those known from ab initio approaches are obtained. Spin waves are studied in the random phase approximation with the use of the susceptibility method. Amplitudes and dispersion relations are calculated. Two acoustic modes with amplitudes enhanced at the interface are found. |
DOI: 10.12693/APhysPolA.88.381 PACS numbers: 75.10.Lp, 75.30.Ds, 75.70.-i |