Researcher in X-ray characterization of semiconductor nanostructures - Hiring in process/Finished, not possible to apply

The Division of Synchrotron Radiation Physics (www.sljus.lu.se) is a part of the Department of Physics and has more than 50 employees. The focus of the research is experimental studies of electronic, structural and chemical properties of materials, accelerators for Synchrotron radiation and instruments and methods for Synchrotron radiation. At the Division we use and develop a wide range of Synchrotron- and lab-based techniques, such as X-ray photoelectron spectroscopy/imaging and X-ray diffraction/imaging. We also host one of Sweden's largest facilities for scanning probe microscopy. We are additionally engaged in the development of the MAX IV Laboratory in the fields of beamlines, experimental stations, techniques for Synchrotron radiation and the accelerator systems.

Subject description
In order to rationally design semiconductor nanostructures with realistic applications in future electronics and photonics, it is crucial to reach a fundamental understanding of their structure-function relationship at length scales from microns to the atomic scale. In nano-objects, surfaces and interfaces are of particular importance, as they often directly define device functionality and strongly influence local electrostatics and strain fields.

This project aims to study the structure and influence of semiconductor nanostructure surfaces and interfaces using cutting edge Synchrotron based diffraction, and imaging techniques.

This will allow us to study detailed geometric and electronic structure of both particularly interesting surfaces and interfaces as well as fully operational devices – even in-operando. The highly advanced Lund III-V semiconductor nanowire platform will be a basic building block to create structures that are both interesting model systems as well as functioning devices using quantum effects for functionality. Structures of both 3-, 2-, 1-, and 0- dimensional character will be investigated. This will be combined with studies of perovskite materials. The overarching goal of the project is a new understanding of how (opto-)electronic nanostructures function on the atomic scale.

Work duties
The successful candidate is supposed to perform research within the subject area.

More specifically, the work duties include:

• Study semiconductor nanostructures using cutting edge synchrotron based diffraction, and imaging techniques. Work will be carried out at the new Synchrotron MAX IV in Lund as well as other synchrotrons worldwide.

Use of hard X-ray diffraction/imaging techniques to study the strain and structure in nanowire-based devices and complex structures is an important aspect. Advanced X-ray imaging techniques such as Coherent Diffraction Imaging or Bragg Ptychography can be used and further developed

This work will be embedded in the NanoLund (www.nano.lu.se) Center for Nanoscience. The successful candidate will interact with experts in manufacturing of semiconductor nanoscale structures and devices to design relevant structures. The work will be performed in collaboration with several other researchers at the institute as well as a number of Ph.D. students and master students.

Qualification requirements
Applicants must have:

• A PhD or equivalent research qualification within the subject of the position.
• Very good oral and written proficiency in English.
• Hands-on experience with coherent X-ray imaging at synchrotron sources.

Assessment criteria and other qualifications
Particular emphasis will be placed on research skills within the subject and on previous experience that helps to perform the described work duties.

Important points in the evaluation:

• Experience in carrying out and analyzing x-ray imaging and x-ray diffraction of nanowire components for electronics at synchrotron facilities.
• Experience in X-ray imaging and diffraction of relevant perovskite materials and nanostructures at synchrotron facilities.
• Experience of data analysis of x-ray imaging and diffraction data as well as phase retrieval.

Consideration will also be given to good collaborative skills, drive and independence, and how the applicant’s experience and skills complement and strengthen ongoing research within the department, and how they stand to contribute to its future development.

Terms of employment
This is a full-time, fixed-term employment of 24 months. Preferred start date is 2021-02-04.

Instructions on how to apply
Applications shall be written in English and be compiled into a PDF-file containing:

• a cover letter in which applicants describe themselves and their particular research interests, including contributions to the described research project (maximum 2 pages) CV and publication list
• contact information of at least two references
• copy of the doctoral degree certificate, and other certificates/grades that you wish to be considered.