Optical and Structural Characterization of Pin Photodetector Based on Germanium Nanocrystals for Third Generation Solar Cells [PDF]
We investigated the structural and optoelectronic properties of p-n germanium nanocrystals based junctions embedded between GaAs substrate and layers of ZnO:Al or a-Si:H.
K.K. Sossoe +4 more
doaj +1 more source
Octyl-decorated Fréchet-type dendrons : a general motif for visualisation of static and dynamic behaviour using scanning tunnelling microscopy [PDF]
Firstly, a short overview on supramolecular chemistry including definitions, basic principles and examples taken from the literature of 2D and 3D self-assembly processes is given in Chapter 1.
Scherer, Lukas J.
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Scanning Tunneling Microscopy and Spectroscopy of Supported Nanostructures
Recent advances in low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS) have provided new opportunities for the investigation of the local geometric, electronic, magnetic, and optical properties of nanostructures.
Wolf-Dieter Schneider
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Atomic-Scale Investigation of Graphene Grown on Cu Foil and the Effects of Thermal Annealing [PDF]
We have investigated the effects of thermal annealing on ex-situ chemically vapor deposited submonolayer graphene islands on polycrystalline Cu foil at the atomic-scale using ultrahigh vacuum scanning tunneling microscopy.
Yong P. Chen +21 more
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Surface Chemistry at the Nanometer Scale [PDF]
This thesis describes research towards understanding surface chemical and physical processes, as well as their effects on the underlying substrate properties, at the nanometer and atomic scales. We demonstrate a method to tune the density of etch pits on
Cao, Peigen
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Scanning tunneling microscopy.
Abstract Scanning Tunneling Microscopy (STM) is a new method for studying surface phenomena in semiconductors and metals on an atomic scale. A metal tip is scanned over the surface at such a small distance that a tunneling current in the nanoamp range flows under application of a voltage between tip and sample. Surface areas are scanned by moving the
Sakurai, Toshio +2 more
openaire +4 more sources
Spectroscopic signature of the Stark-shifted Tamm-type surface state of La(0001)
We have studied the Tamm-type surface state of La(0001) by tunneling spectroscopy within a wide range of tunneling currents from 0.1 nA to 8000 nA, thereby tuning the electric-field strength in a tip-vacuum-sample tunnel junction.
Dominik Schreyer +2 more
doaj +1 more source
Spatial inhomogeneity of the superconducting gap and order parameter in Se0.4Te0.6 [PDF]
U.R.S. acknowledges support by the Alexander-von-Humboldt Foundation; furthermore, we acknowledge support by SPP1458 of the DFG through Projects No. WA2510/1-1 and No.
Schmaus, Stefan +10 more
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Scanning tunneling microscopy experiments using iron-coated tungsten tips and current-carrying tungsten films have been conducted. An asymmetry of the tunneling current with respect to the change of the direction of the bias current through a tungsten ...
Ting Xie +6 more
doaj +1 more source
Quantum dot scanning tunneling microscopy for Majorana bound states in continuum
We propose a device composed of a quantum dot (QD) connected to a normal metal lead to detect Majorana bound states (MBSs), which are formed at the ends of a topological superconductor nanowire (TSNW) and coupled to the lead with spin-dependent ...
Hai-Rui Zhang, Yong-Ping Sun
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