Magneto-optical Kerr rotation spectra in Fe ultrathin film on noble metals
نویسندگان
چکیده
It is supposed that an ultrathin film has an electronic structure which is different from the bulk state. So far many theoretical and experimental works have been done on the electronic structures of ultrathin films [ 11. However only a few works have been reported in the field of the magneto-optical effect of thin ferromagnetic films except for SMOKE [2]. Recently, we found a new magneto-optical Kerr rotation peak in Fe ultrathin films below 8 A. These films were deposited on Au buffer layers [3]. Himpsel found evidence for the existence of quantum well states in Fe ultrathin films deposited on Au using inverse photoemission spectroscopy (IPES) [4,5]. In this experiment, we prepared several kinds of Fe ultrathin films deposited on Ag(100) buffer layers. The magneto-optical Kerr rotation (+K) spectra of these films were measured and compared with those deposited on Au buffer layers.
منابع مشابه
Calculation of Magneto-optical Spectra in Compositionally-modulated Multilayered Films
Magneto-optical spectrum of compositionally modulated multilayered thin films (CMF) of transition metal/noble metal structure is calculated by using virtual optical constant method, by which most of the experimental results are explained. The physical reasons of enhancement of magneto-optical effect are discussed. Compositionally-modulated multilayered films (CMF) are of recent interest among r...
متن کاملAnisotropic Polar Magneto-Optic Kerr Effect of Ultrathin Fe/GaAs(001) Layers due to Interfacial Spin-Orbit Interaction.
We report the observation of the anisotropic polar magneto-optical Kerr effect in thin layers of epitaxial Fe/GaAs(001) at room temperature. A clear twofold symmetry of the Kerr rotation angle depending on the orientation of the linear polarization of the probing laser beam with respect to the crystallographic directions of the sample is detected for ultrathin magnetic films saturated out of th...
متن کاملMagneto-optical Sandwiches for Surface Plasmon Resonance Systems
The Au/Fe grating/Au sandwiches located on BK-7 substrate have been applied in Otto configuration for magneto-optical (MO) surface plasmon resonance sensor units. We analyzed the reflectance and Kerr magneto-optical parameters of used structure for different periodicity Λ and thickness of golden films. The height of Fe dots placed in Au matrix has been fixed at 20 nm, the laser incidence beam w...
متن کاملMagneto-optical Kerr rotation spectra in ordered and disordered phases of Fe-Pt alloy films
The magneto-optical Kerr rotation (0,) spectra and the related properties have been measured in ordered and disordered phases of several kinds of Fe-R alloy films. The / 0, 1 in as-deposited (disordered) films becomes gradually larger with increasing Fe content until about SO at% Fe, but the shape of 0 k spectra does not change so much. After annealing, however, all the 0, spectra were changed....
متن کاملar X iv : c on d - m at / 9 50 90 13 v 1 4 S ep 1 99 5 Theory of Nonlinear Magneto - Optics
Nonlinear magneto-optics is a very sensitive fingerprint of the electronic, magnetic, and atomic structure of surfaces, interfaces, and thin ferromagnetic films. Analyzing theoretically the nonlinear magneto-optical Kerr effect for thin films of Fe(001) and at Fe surfaces we demonstrate exemplarily how various electronic material properties of ferromagnets , such as the d-band width, the magnet...
متن کامل