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Thouless length and valley degeneracy factor of ZnMnO thin films with anisotropic, highly conductive surface layers
Isothermal magnetoresistance (MR) of n-type conducting Zn1–xMnxO thin films on a sapphire substrate with a Mn content of 5 at. % has been studied in in-plane and out-of-plane magnetic fields up to 6...
PublikationenTransition metal diffusion in diluted magnetic Si and GaAs prepared by pulsed laser processing
Starting from a random or ordered distribution of 0.8%, 1.6%, 3.7%, and 12.5% dopants over the lattice sites of a simple cubic grid, we estimate the fraction of unclustered dopants after pulsed laser processing...
PublikationenEffects of the TiO2 buffer thickness on SrTiO3 (111) epitaxial films grown on GaN (0002)
SrTiO3 (STO) films have been grown on TiO2-buffered GaN(0002) substrates. The deposition process was in situ monitored by reflective high energy electron diffraction (RHEED). The deposition rate and in-plane...
PublikationenAmorphous clusters in Co implanted ZnO induced by boron preimplantation
We demonstrate the formation of superparamagnetic/ferromagnetic regions within ZnO(0001) single crystals sequentially implanted with B and Co. While the preimplantation with B plays a minor role for the...
PublikationenFerromagnetic resonance on metal nanocrystals in Fe and Ni implanted ZnO
We studied the angular dependence of the ferromagnetic resonance (FMR) spectra of (0001)ZnO single crystals implanted with Ni and Fe ions and compared the results to the data obtained by other experimental...
PublikationenDeep level transient spectroscopy and pseudopotential superlattice calculation for an InAs monolayer embedded in GaAs
We present deep level transient spectroscopy measurements and pseudopotential supercell calculations for InAs monolayers embedded in GaAs. The insertion of InAs MLs into GaAs generates two states in the...
PublikationenEnhanced field emission from cerium hexaboride coated multiwalled carbon nanotube composite films: A potential material for next generation electron sources
Intensified field emission (FE) current from temporally stable cerium hexaboride (CeB6) coated carbon nanotubes (CNTs) on Si substrate is reported aiming to propose the new composite material as a potential...
PublikationenMicrostructure, electrical, magnetic, and extraordinary Hall effect studies in Ni:SiO2 nanogranular films synthesized by atom beam sputtering
In this work we report on the synthesis of Ni:SiO2 nanogranular films with different metal fraction (0.10≤x≤0.68)and a homogeneous distribution of Ni particles by atom beam sputtering technique and...
PublikationenRole of Coulomb blockade and spin-flip scattering in tunneling magnetoresistance of FeCo-Si-O nanogranular films
In this work, we report the effect of FeCo atomic fraction (0.33<x<0.54) and temperature on the electrical, magnetic, and tunneling magnetoresistance (TMR) properties of FeCo-Si-O granular films...
PublikationenThickness independent magneto-optical coupling constant of nickel films in the visible spectral range
Magneto-optical properties of nominally 10, 20, and 30 nm thick ferromagnetic Ni films have been investigated at room temperature by vector-magneto-optical generalized ellipsometry under saturated magnetization...
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