In the framework of this thesis, two- and three-dimensional topological insulators (TI) are investigated with opto-electronic effects in the terahertz range. It is demonstrated that in both cases, photogalvanic effects can be utilized for the detection and the analysis of Dirac fermion states. In the three-dimensional case, a cyclotron-resonance-enhanced photocurrent is observed by exciting 80 nm strained HgTe films with terahertz radiation. The arising resonances could be clearly attributed to the topologically protected top and bottom surface states of the system. Studying these resonant responses in a gated sample, the behaviour of the photocurrent is observed upon a modification of the Fermi energy, which allows the extraction of the cy...
Optical injection and detection of charge currents is an alternative to conventional transport and p...
By means of angle-resolved photoemission spectroscopy measurements, the electronic band structure of...
with supplementary materialThe topological surface states of strained HgTe have been measured using ...
In the framework of this thesis, two- and three-dimensional topological insulators (TI) are investig...
The research carried out in the framework of this thesis clearly demonstrates that in mercury tellur...
This work is devoted to the study of mercury cadmium telluride based heterostructures employing tech...
Within this thesis it is demonstrated that the excitation of systems, which are characterized by a l...
We report on the observation of cyclotron-resonance-induced photocurrents, excited by continuous wav...
We report on the observation of a circular photogalvanic current excited by terahertz laser radiatio...
In this thesis, a number of transport effects in topological insulator nanostructures are investigat...
HgTe is a versatile topological material and has enabled the realization of a variety of topological...
The present thesis is aimed to the study of nonlinear optoelectronic phenomena induced by terahertz ...
Transport in topological matter has shown a variety of novel phenomena over the past decade. Althoug...
We report on the observation of magneto-oscillations of terahertz radiation induced photocurrent in ...
Optical injection and detection of charge currents is an alternative to conventional transport and p...
By means of angle-resolved photoemission spectroscopy measurements, the electronic band structure of...
with supplementary materialThe topological surface states of strained HgTe have been measured using ...
In the framework of this thesis, two- and three-dimensional topological insulators (TI) are investig...
The research carried out in the framework of this thesis clearly demonstrates that in mercury tellur...
This work is devoted to the study of mercury cadmium telluride based heterostructures employing tech...
Within this thesis it is demonstrated that the excitation of systems, which are characterized by a l...
We report on the observation of cyclotron-resonance-induced photocurrents, excited by continuous wav...
We report on the observation of a circular photogalvanic current excited by terahertz laser radiatio...
In this thesis, a number of transport effects in topological insulator nanostructures are investigat...
HgTe is a versatile topological material and has enabled the realization of a variety of topological...
The present thesis is aimed to the study of nonlinear optoelectronic phenomena induced by terahertz ...
Transport in topological matter has shown a variety of novel phenomena over the past decade. Althoug...
We report on the observation of magneto-oscillations of terahertz radiation induced photocurrent in ...
Optical injection and detection of charge currents is an alternative to conventional transport and p...
By means of angle-resolved photoemission spectroscopy measurements, the electronic band structure of...
with supplementary materialThe topological surface states of strained HgTe have been measured using ...