Temperature dependence of magnetization-induced second harmonic generation at buried exchange-biased interfaces

Origin of spontaneous magnetization reversal in exchange biased heterostructures

The dependence of thermally induced spontaneous magnetization reversal on time-dependent cooling protocols implies that this reversal is energetically favored, contrary to the prediction of existing positive exchange bias models. Slow cooling through and long waiting near the Néel temperature of the antiferromagnet enhances the magnitude of the magnetization reversal. Further, cycling the tempe...

Paramagnetism of Si ( 111 ) - 7 × 7

Surface-sensitive second-harmonic generation, with the proper choice of symmetry, has demonstrated an extremely high sensitivity for detecting surface magnetization on Si(111)-7×7 induced by an external magnetic field of 10 T. Electron spins at the dangling bonds are suggested to be responsible for the observed magnetization of surfaces of nonmagnetic semiconductors. The temperature dependence ...

Magnetization-induced-second -harmonic generation from surfaces and interfaces

ar 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...

DC-electric-field-induced and low-frequency electromodulation second-harmonic generation spectroscopy of Si(001)-SiO2 interfaces

The mechanism of DC-Electric-Field-Induced Second-Harmonic (EFISH) generation at weakly nonlinear buried Si(001)-SiO2 interfaces is studied experimentally in planar Si(001)-SiO2-Cr MOS structures by optical secondharmonic generation (SHG) spectroscopy with a tunable Ti:sapphire femtosecond laser. The spectral dependence of the EFISH contribution near the direct two-photon E1 transition of silic...