189 citations · 747 across the 20 of their papers we have counts for
21 papers
Spontaneous nucleation and growth of GaN nanowires: Fundamental role of crystal polarity
Sergio Fernández-Garrido, Xiang Kong, Tobias Gotschke +4
We experimentally investigate whether crystal polarity affects the growth of GaN nanowires in plasma-assisted molecular beam epitaxy and whether their formation has to be induced b…
Room-temperature ferroelectric switching of spin-to-charge conversion in GeTe
Sara Varotto, Luca Nessi, Stefano Cecchi +17
Since its birth in the 1990s, semiconductor spintronics has suffered from poor compatibility with ferromagnets as sources of spin. While the broken inversion symmetry of some semic…
Carrier diffusion in GaN -- a cathodoluminescence study. III: Nature of nonradiative recombination at threading dislocations
Jonas Lähnemann, Vladimir M. Kaganer, Karl K. Sabelfeld +5
We investigate the impact of threading dislocations with an edge component (a or a+c-type) on carrier recombination and diffusion in GaN(0001) layers close to the surface as well a…
Carrier diffusion in GaN -- a cathodoluminescence study. II: Ambipolar vs. exciton diffusion
Oliver Brandt, Vladimir M. Kaganer, Jonas Lähnemann +8
We determine the diffusion length of excess carriers in GaN by spatially resolved cathodoluminescence spectroscopy utilizing a single quantum well as carrier collector or carrier s…
Influence of Mg doping on In adsorption and In incorporation in (In,Ga)N superlattices
Erdi Kuşdemir, Caroline Chèze, Raffaella Calarco
We present a detailed investigation of the mechanisms at play for the incorporation of In and Mg on the GaN(0001) surface during plasma-assisted molecular beam epitaxy (PAMBE). Fir…
Carrier diffusion in GaN -- a cathodoluminescence study. I: Temperature-dependent generation volume
Uwe Jahn, Vladimir M. Kaganer, Karl K. Sabelfeld +8
The determination of the carrier diffusion length of semiconductors such as GaN and GaAs by cathodoluminescence imaging requires accurate knowledge about the spatial distribution o…