Quasi-particle Interference in Sr2RhO4

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Quasi-particle Interference in Sr2RhO4

Type: Master thesis
Title: Quasi-particle Interference in Sr2RhO4
Author: Tromp, Willem
Issue Date: 2018-08-31
Keywords: STM
QPI
quasi-particle interference
rhodate
Sr2RhO4
Abstract: 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 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.
Supervisor: Allan, Milan
Faculty: Faculty of Science
Department: Physics (Master)
Specialisation: QMO
ECTS Credits: 4
Handle: http://hdl.handle.net/1887/66516
 

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