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Interband transitions in [001]-(GaP)(1)(InP)(m) superlattices
We study the optical interband transitions of [001]-(GaP)1(InP)m monolayer superlattices on (001) InP for m=5, 14, 27 and 51 using spectroscopic ellipsometry for photon energies from 1 to 6 eV. Samples...
PublikationenMn-doped Ge and Si:A Review of the Experimental Status
Diluted ferromagnetic semiconductors (FMS) are in the focus of intense research due to their potential applications in spintronics and their striking new physical properties. So far Mn-doped III-V compound...
PublikationenIntensity of optical absorption close to the band edge in strained ZnO films
Besides other one of the remarkable properties making wurtzite ZnO such an interesting material is its large exciton binding energy of about 60 meV, leading to stable excitons at room-temperature. Also,...
PublikationenHomoepitaxial ZnO Thin Films Fabricated by Using Pulsed-Laser Deposition
ZnO thin films were deposited homoepitaxially by using pulsed-laser deposition on ZnO wafers grown by using the hydrothermal method. The dominant shallow donor level in the nominally undoped thin films...
PublikationenVacuum ultraviolet dielectric function and band structure of ZnO
For ZnO, the optical dielectric functions for polarizations parallel and perpendicular to the optical axis were determined in the photon energy range from 4.0 to 9.5 eV by using generalized spectroscopic...
PublikationenAging and annealing effects on the magnetic ordering induced by proton irradiation in graphite
Aging and annealing effects on the topography and the magnetic ordering induced by proton irradiation in highly oriented graphite samples have been studied with atomic force and magnetic force (MFM) microscopy....
PublikationenForming-Free Unipolar Resistive Switching in BiFe0.95Co0.05O3 Films
We report the forming-free unipolar resistive switching effects in polycrystalline BiFe0.95Co0.05O3 films which were spin-coated on ITO/glass substrates by a chemical solution deposition method. The resistive...
PublikationenTailoring the magnetism of GaMnAs films by ion irradiation (vol 44, 045001, 2011)
Ion irradiation of semiconductors is a well-understood method to tune the carrier concentration in a controlled manner. We show that the ferromagnetism in GaMnAs films, known to be hole-mediated, can be...
PublikationenMulti-level switching in TiOxFy film with nanoparticles
A reliable bipolar resistive switching device was achieved with multi-level switching behavior in fluorine-doped titanium oxide (TiOxFy) film. Different resistance states can be precisely controlled by...
PublikationenEpitaxial growth of SrTiO3 (0 0 1) films on multilayer buffered GaN (0 0 0 2) by pulsed laser deposition
SrTiO3 films were grown on CeO2/YSZ/TiO2 multilayer buffered GaN/Al2O3 (0 0 0 1) substrates with and without the YBa2Cu3O7−x (YBCO) bridge layer by pulsed laser deposition (PLD). The deposition process...
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