The advent of high-temperature superconductivity in 1986 [1] shook the foundations of superconductivity. First identified in the cuprate BanLa5−nCu5O5+x, it propelled these elusive materials unto...Show moreThe advent of high-temperature superconductivity in 1986 [1] shook the foundations of superconductivity. First identified in the cuprate BanLa5−nCu5O5+x, it propelled these elusive materials unto the center stage of physics. To let the cuprates divulge their secrets, quasi-particle interference is nowadays an indispensable tool. In the nascent days of the field research using this method primarily has been performed on the underdoped version of the cuprates. The overdoped regime however is less intensively studied. In this study we apply the T-matrix method to model QPI in the overdoped phase. We modify a simulation for underdoped cuprates to make it suitable for application on the desired regime. Then, in order to obtain a quantative analysis of our result we compare experiment and simulation using the Structural Similarity Index Measure. Using this method the filling of the gap, the characteristics of the dispersion bands and the van Hove singularity are investigated.Show less
The spectroscopic techniques of ARPES and spectroscopic STM play a key role in strongly correlated electron research due to their ability to resolve k-space. However, due to their different...Show moreThe spectroscopic techniques of ARPES and spectroscopic STM play a key role in strongly correlated electron research due to their ability to resolve k-space. However, due to their different approaches in obtaining k-space information, the two techniques do not necessarily agree on the observed bandstructure. Here, in an attempt to clear the fog between the two, we present FT-STM results on the rhodate Sr2RhO4 focusing on the comparison between our data and previous ARPES studies on the same sample. We deduce the low-energy bandstructure through the modulations of the LDOS caused by impurity scattering. The Fermi surface area and self-energy are then calculated. We find a flattened dispersion compared to the ARPES result which is shown to be in line with previous FT-STM studies on other correlated electron materials.Show less
