PhD Student - Electron tomography

PhD Student (m/f/d) – Electron tomography of epitaxially strained heterostructure

Due to the ongoing miniaturization of modern opto-electronic devices towards low dimensionality and nanometric size, interfaces between different materials are becoming increasingly important for the functionality of these devices and their performances. This fact is all the more significant because interfaces are three-dimensional (3D) objects defined by their topography and a transition region perpendicular to the interface plane formed by atom interdiffusion. Advanced electron tomography allows reconstructing the 3D structure information of semiconductor interfaces and thereby independently determining both morphological roughness, alloy disorder and chemical intermixing.

In this project, the successful candidate will work on electron tomography investigations of epitaxial interfaces between very dissimilar materials with special focus on the influence of epitaxial strain. Of particular interest in this context is the scale dependence of this interface property and the strain distribution, which is to be investigated by specifically varying the material combination and the diameter of the tomography needle to be reconstructed.

Responsibilities:

• Target preparation of samples for electron tomography by focused ion beam techniques
• Performing tilt series with high-angle annular dark-field imaging in a high-end Cs-corrected STEM
• Conducting 3D tomographic reconstruction and data analysis
• Collaboration in the Application Laboratory Electron Tomography
• Presentation of results at conferences and in publications

Qualifications:

• Pursuing a doctoral degree in physics
• Master’s degree in physics, electrical engineering, materials science, or a related field
• Preferential good background in condensed matter physics, functional materials or nanotechnology
• Experience in transmission electron microscopy
• Basic knowledge of sample preparation by focused ion beam technique
• Good communication skills and the spirit to work in an interdisciplinary and diverse team

This position is available from October 15, 2024, and is limited to a 3-year period.

Salary and benefits are according to the Treaty for German public service (TVöD Bund) to a level of E13 (75%), taking work experience and special professional skills into account.

Benefits:

• Modern laboratories with a wide range of experimental techniques
• Supportive environment with experts for various scientific sub-fields
• International and culturally diverse community
• Location in the heart of Berlin with excellent public transport connections
• A subsidized travel ticket
• Possibility to participate in professional development programs

The Paul Drude Institute is part of the Forschungsverbund Berlin e.V. and a member of the Leibniz Association. The institute carries out basic and applied research at the nexus of materials science, condensed matter physics, and device engineering.

With approximately 100 employees and more than 15 nationalities, PDI is committed to building a talented, inclusive, and culturally diverse workforce. We understand that our shared future is guided by basic principles of fairness and mutual respect. Among equally qualified applicants, preference will be given to candidates from marginalized groups. As an equal opportunity and family-friendly employer, we offer highly flexible employment conditions, such as flexible working hours, parental leave, and home office, and we strive to create a family- and life-conscious working environment.

Please upload your application by September 11, 2024.
Your documents should include:

• CV
• Diploma(s) and transcript(s)
• Up to 2 references (incl. contact details)

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