Davide Sciacca
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Carrier-assisted recombination in anatase TiO2 Open
Differential optical transmission experiments performed on TiO2 layers reveal a carrier population decay that follows a power-law over several orders of magnitude in both time and signal amplitude, across a temperature range from 10 K up t…
Photocarrier dynamics in anatase : Evidence of thermally activated collisions between carriers Open
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The Ground State of Epitaxial Germanene on Ag(111) Open
Two-dimensional (2D) honeycomb lattices beyond graphene, such as germanene, appear very promising due to their outstanding electronic properties, such as the quantum spin Hall effects. While there have been many claims of germanene monolay…
Transport Properties of Methyl-Terminated Germanane Microcrystallites Open
Germanane is a two-dimensional material consisting of stacks of atomically thin germanium sheets. It’s easy and low-cost synthesis holds promise for the development of atomic-scale devices. However, to become an electronic-grade material, …
Structure of germanene/Al(111): a two-layers surface alloy Open
Unlike silicene, for which the demonstration of its existence has been done through numerous independent studies, the possibility of growing epitaxial germanene remains highly controversial. It has been recently shown by scanning tunneling…
Structure of Germanene/Al(111): A Two-Layer Surface Alloy Open
Unlike silicene, for which the demonstration of its existence has been done through numerous independent studies, the possibility of growing epitaxial germanene remains highly controversial. It has been recently shown by scanning tunneling…
Engineering a Robust Flat Band in III–V Semiconductor Heterostructures Open
Electron states in semiconductor materials can be modified by quantum confinement. Adding to semiconductor heterostructures the concept of lateral geometry offers the possibility to further tailor the electronic band structure with the cre…
Account of the diversity of tunneling spectra at the germanene/Al(1 1 1) interface Open
Despite the wealth of tunneling spectroscopic studies performed on silicene and germanene, the observation of a well-defined Dirac cone in these materials remains elusive. Here, we study germanene grown on Al(1 1 1) at submonolayer coverag…