منابع مشابه
Magnetization reversal in cobalt antidot arrays
We have carried out a detailed study of the magnetic switching in square lattice cobalt antidot arrays with periods ranging from 2 m down to 200 nm antidot size=antidot separation . Magneto-optical Kerr effect measurements show first a small change in the magnetization due to a reversible rotation of the magnetic spins in the antidot rows, followed by a large change due to reversal of the antid...
متن کاملMagnetoconductance oscillations in graphene antidot arrays
Epitaxial graphene films have been formed on the C-face of semi-insulating 4H-SiC substrates by a high temperature sublimation process. Nanoscale square antidot arrays have been fabricated on these graphene films. At low temperatures, magnetoconductance in these films exhibits pronounced Aharonov–Bohm oscillations with the period corresponding to magnetic flux quanta added to the area of a sing...
متن کاملFerromagnetic resonance study of thin film antidot arrays: Experiment and micromagnetic simulations
O. N. Martyanov,1 V. F. Yudanov,1 R. N. Lee,2 S. A. Nepijko,3,4,* H. J. Elmers,4 R. Hertel,5 C. M. Schneider,5 and G. Schönhense4 1Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, 630090 Novosibirsk, C.I.S./Russia 2Budker Institute of Nuclear Physics, Siberian Branch of the Russian Academy of Sciences, Prospekt Akademika Lavr...
متن کاملIn Ion-cyclotron Resonance Heating
We determine the conditions under which the damping of the fast Alfven wave, used in the heating of tokamak plasmas, can be described by the geometrical optics approximations. Also, for these conditions, we derive an analytical formula which explicitly determines the amount of energy which is damped onto the plasma particles by the fast wave. The conditions for the validity of the geometrical o...
متن کاملCyclotron resonance in bilayer graphene.
We present the first measurements of cyclotron resonance of electrons and holes in bilayer graphene. In magnetic fields up to B=18 T, we observe four distinct intraband transitions in both the conduction and valence bands. The transition energies are roughly linear in B between the lowest Landau levels, whereas they follow square root[B] for the higher transitions. This highly unusual behavior ...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2002
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.65.125326