Master Thesis

vor 2 Wochen

Jülich, Deutschland Forschungszentrum Jülich Vollzeit

The Ernst Ruska-Centre (ER-C) for microscopy and spectroscopy with electrons is a center of excellence in advanced transmission electron microscopy (TEM) and spectroscopy for addressing topical problems in materials science, solid-state physics and chemistry, biology and soft matter. It comprises three divisions which each have a different focus. At ER-C-1 (Physics of Nanoscale Systems) we carry out systematic characterizations using various complementary techniques, including the latest TEM based techniques, such as electron holography, HR-(S)TEM, high energy resolution spectroscopy, 4D-STEM, and ptychography. This enables the measurement of, e.g., electrical potentials and magnetic fields, polarization fields, built-in potentials, strain, and carrier dynamics on nanometer scales with high temporal resolution.

**Your Job**:
This master’s thesis aims to produce freestanding SrTiO₃ films with a thickness of less than 100 nm using various established remote epitaxy methods. The efficiency of these methods will be evaluated by characterizing the film’s microstructure at atomic resolution using advanced transmission electron microscopy (TEM) techniques. The experiments will be conducted at ER-C-1 and the cleanroom of HNF FZJ, in collaboration with PGI-7 and PGI-9 FZJ. These freestanding SrTiO₃ films will serve as electron-beam-transparent membranes (patent pending), designed to be technologically compatible with the epitaxial growth of high-quality superconducting and ferromagnetic oxide films.

Key objectives:

- Fabrication of electron-transparent freestanding SrTiO₃ films
- Atomic-scale characterization of their microstructure using TEM
Growth and analysis of epitaxial superconducting and ferromagnetic oxide films on the freestanding SrTiO₃ membranes

**Your Profile**:

- You are interested in and ideally also have previous knowledge in the fields of electron microscopy and solid state physics.
- You can work independently and reponsibly, show commitment, a high level of teamwork, and enjoyment of cooperative collaboration.
- Furthermore, you can quickly familiarize yourself with new methods and techniques.
- You are fluent in written and spoken English.

**Our Offer**:
We work on highly relevant, innovative topics and offer you the opportunity to actively shape change

We offer you:

- An interesting and socially relevant topic for your thesis with a future-oriented topic
- Ideal conditions for practical experience alongside your studies
- Interdisciplinary collaboration on projects in an international, committed and collegial team
- Excellent scientific equipment and the latest technology
- Qualified supervision by scientific colleagues
- Independent preparation and implementation of the assigned tasks
- A large research campus in the countryside, which offers the best opportunities for networking with colleagues and for sporting activities alongside work
- Flexible working hours and appropriate remuneration
The opportunity to work flexibly (in terms of location), e.g. partly from home

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