Anisotropic magnetism and spin-dependent transport in Co nanoparticle embedded ZnO thin films

Spin-dependent hot electron transport in Co/Cu thin films

Hot-electron transport in Co/Cu/Co trilayer films has been studied in the energy range from 1.0 to 2.0 eV using ballistic electron magnetic microscopy. Both the spin-dependent attenuation lengths of Co and the cumulative polarizing effects of spin-dependent tunneling and transmission across a Co/Cu interface have been determined. For very thin (a few A) Co layers, the latter effects result in a...

Charge carrier and spin doping in ZnO thin films

Recent efforts on doping ZnO films for charge and spin functionality are reviewed, focusing on chemical doping for charge and spin device formation. Discussion includes the behavior of phosphorus as an acceptor and magnetism in transition metal-doped ZnO. Evidence for p-type behavior in phosphorus-doped (Zn,Mg)O grown by pulsed laser deposition is presented. The magnetic properties of ZnO co-do...

Correlation between magnetism and spin-dependent transport in CoFeB alloys.

We report a correlation between the spin polarization of the tunneling electrons and the magnetic moment of amorphous CoFeB alloys. Such a correlation is surprising since the spin polarization of the tunneling electrons involves s-like electrons close to the Fermi level (E_{F}), while the magnetic moment mainly arises due to all the d electrons below E_{F}. We show that probing the s and d band...

Anisotropic electrical transport in epitaxial La2/3Ca1/3MnO3 thin films

Low-temperature d.c. transport in anisotropic dirty thin dielectric films

A theory of low-temperature ohmic dc transport in dirty 2D quasi-one dimensional electronic crystals, such as charge-density wave (CDWs) thin films, is presented. At low temperatures we find that Efros-Shklovskii (ES) variable-range hopping (VRH) laws dominate the transport. At the lowest energies of the problem we find a usual impurity-independent linear Coulomb-gap (CG), g( ) ∝ , in the singl...