Open positions / projects

 

Master project

Hunting massless electrons in topological metals

Topological semi-metals are a new class of materials in which electrons behave like massless particles. Their unique properties lead to highly unusual materials behavior, which we hope to harness in future technology. One of their properties is an unusually strong, paramagnetic response in strong magnetic fields. Using on-chip magnetometry, you can search for this quantum property in LaRhIn5. more
Superconducting nanostructures fabricated by Focused Ion Beam deposition
Superconducting circuits are the basis for quantum technology. Usually, superconductors are fabricated in thin-film form and patterned by lithography. Here you will explore a different approach: Solidifying a gaseous precursor of WCO6 under strong ion irradiation is a method to directly grow superconductors onto any surfaces. Meanwhile, the carbon concentration critically determines the superconducting transition, the relation between them needs to be explored. more
Break the wall: electric contacts to correlated oxides

Break the wall: electric contacts to correlated oxides

Conductive oxides are spectacular materials. They host record-high temperature superconductivity, magnetism and often phase-change properties. An important issue towards their applications is the difficulty to form electric contacts to metals. You would explore a new fabrication route based on nanoparticles. 
Self-assembled Bi nanowires

Self-assembled Bi nanowires

Bismuth is a high mobility semimetal which has been studied for decades. Recently, we noticed that bismuth patches, when connected to gold thin films, form nano-wires following the gold morphology. This is a rather strange growth process that we would like to study in more detail.
Direct-patterning of micro-resonators by focused ion beam (FIB)

Direct-patterning of micro-resonators by focused ion beam (FIB)

In a FIB, a gaseous precursor can be locally solidified by ion-assisted chemical vapor deposition. The deposited films are Pt-rich, and host an intricate microstructure consisting of Pt nanocrystals embedded in a carbon matrix. Little is known about the dynamical mechanics of these materials. The goal is to fabricate a free-standing Pt cantilever, and measure its resonance frequency, from where you can compute the elastic modulus and obtain a Q-factor.
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