Optical anisotropy of (113)-oriented GaAs/AlAs superlattices

Influence of the interface corrugation on the subband dispersions and the optical properties of (113)-oriented GaAs/AlAs superlattices

Interfacial anisotropy in magnetic superlattices.

We have observed large discrepancies between the dc magnetization and ferromagnetic resonance (FMR) magnetic anisotropy in Mo-Ni superlattices. We show that higher-order anisotropy is present in both measurements and develop an analysis by which the first-order and second-order energies can be treated independently. The low-temperature results show a systematic divergence of the first-order FMR...

In-plane optical anisotropy of InAs/GaSb superlattices with alternate interfaces

The in-plane optical anisotropy (IPOA) in InAs/GaSb superlattices has been studied by reflectance difference spectroscopy (RDS) at different temperatures ranging from 80 to 300 K. We introduce alternate GaAs- and InSb-like interfaces (IFs), which cause the symmetry reduced from D 2d to C 2v . IPOA has been observed in the (001) plane along [110] and [1[Formula: see text]0] axes. RDS measurement...

Tunneling through superlattices: the effect of anisotropy and kinematic coupling.

The tunneling of carriers in stratified superlattice systems is analyzed in terms of the constituent effective mass tensor. The focus is on the effects on the tunneling which are caused by the side regions of an intervening barrier. Depending on the covalency and work function in the constituent layers of a superlattice, it is concluded that the kinematics in the regions on either side determi...

Magneto-optical properties of HgTe-CdTe superlattices.

We present a comprehensive theoretical formulation for magneto-optical properties in narrow-band-gap and zero-band-gap Hg Te-CdTe superlattices. It is found to be crucial that the details of the unique band structure be taken into account in full generality. Statistical factors also play a dominant role in the magneto-optical properties, since the location of the Fermi level determines which of...