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Postdoctoral Appointee - MSD Ultrafast Time-Resolved X-ray Diffraction Microscopy and Spectroscopy for Quantum Materials

Argonne National Laboratory · Lemont, IL · $79,000–$84,000 a year · Full time

Posted Nov 13, 2025 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about an experiment you led at a large facility. How did you prepare for beamtime?

What they are checking: Whether they can lead experiments, which this posting asks for directly.

Tell me about working with outside collaborators on a shared experiment. How did you divide the work?

What they are checking: Whether they can work well with external partners, which this role requires.

Which open question in ultrafast quantum materials would you most like to answer here?

What they are checking: Whether they have their own scientific vision to lead research.

What would you do

Your XFEL beamtime is in two days and a sample arrives damaged. What do you do?

What they are checking: How they adapt under pressure when beamtime is scarce and fixed.

About the work

Walk me through how you'd design a pump-probe X-ray diffraction experiment to catch a nonequilibrium phase transition in a ferroelectric thin film.

What they are checking: Whether they can plan a time-resolved experiment from pump choice to timing and what to measure.

What determines time resolution at a synchrotron versus an XFEL, and when would you choose each?

What they are checking: Whether they understand the tradeoffs between facilities for femto- to nanosecond dynamics.

How would you separate structural dynamics from simple laser heating effects in your data?

What they are checking: Whether they can tell real photoinduced dynamics from thermal artifacts.

How can time-resolved diffraction tell you about phonons or magnons in a quantum material?

What they are checking: Whether they understand how collective excitations show up in X-ray signals.

How do you handle timing jitter and drift in ultrafast X-ray measurements?

What they are checking: Whether they know the practical problems of synchronizing lasers and X-ray pulses.

What diffraction microscopy methods would you use to see how domains change during a transition?

What they are checking: Whether they can combine spatial and time resolution to study heterogeneous dynamics.

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The full job description

As published by Argonne National Laboratory.

The Coherent and Ultrafast X-ray Science Group in the Materials Science Division at Argonne National Laboratory is seeking a highly motivated postdoctoral appointee to lead research in ultrafast time-resolved hard X-ray diffraction microscopy and spectroscopy on single-crystalline bulk and thin film quantum materials (e.g. ferroelectrics, multiferroics, strongly correlated electron systems). This position will focus on ultrafast dynamics in femto- to nanosecond time-domains in quantum materials including nonequilibrium phase transitions and collective excitations in quantum materials, including phonons, magnons, and other emergent quasiparticles. The successful candidate will lead time-resolved X-ray diffraction experiments to reveal structural and electronic dynamics in condensed matter systems. The postdoctoral researcher will work closely with scientists at the Materials Science Division and the Advanced Photon Source (APS) as well as collaborate with external partners to exploit state-of-the-art synchrotron and X-ray free-electron laser (XFEL) facilities for exploring transient states with high temporal and spatial resolution. Although the maximum salary for the position is $117,925, the actual range is $79,000 to $84,000. Job Responsibilities • Lead ultrafast X-ray diffraction and in-situ experiments at synchrotron and XFEL facilities to probe structural and electronic dynamics in quantum materials. • Design and implement synchronization and timing electronics, including pulse, function, and delay generators, for sub-nanosecond and femtosecond measurements. • Analyze multidimensional datasets (time, space, reciprocal space, and temperature). • Collaborate with beamline scientists to commission advanced instrumentation and novel measurement schemes. • Publish scientific results in peer-reviewed journals and present findings at national and international conferences. This position will provide the opportunity to: • Lead cutting-edge time-resolved X-ray experiments at world-leading synchrotron and XFEL facilities. • Explore the dynamics of emergent phenomena, including non-equilibrium structural, magnetic, and electronic phase transitions or collective excitations, in quantum materials. • Collaborate with diverse and interdisciplinary teams within the Materials Science division at the Argonne National Laboratory and external collaborators. Position Requirements • Ph.D. (completed or soon to be completed) in Physics, Materials Science and Engineering, Applied Physics, or a closely related discipline. • Demonstrated expertise in time-resolved X-ray diffraction and in-situ X-ray micro/nanoscopy. • Experience working with synchrotron or X-ray free-electron laser (XFEL) facilities. • Hands-on experience with ultrafast pump-probe or in-situ experimental techniques employing laser, magnetic, or electrical fields. • Proficiency in experimental electronics and timing systems (e.g., pulse generators, delay generators, gating electronics, and synchronization circuits). • Demonstrated proficiency in x-ray data analysis and instrument control using Python, MATLAB, or equivalent programming languages. Preferred Qualifications • Working knowledge of X-ray optics, detector systems, and beamline instrumentation. • Background knowledge in ultrafast phase transition and structural dynamics in condensed matter systems. Please upload the following as attachments to your application via Workday: • CV/Resume • Cover Letter • Unofficial Ph.D. Transcripts • If already awarded, a copy of your Ph.D. diploma. Candidates can be currently enrolled to apply, but must have proof of degree conferral by the position start date. At the point of interview, candidates will be asked to submit the name/contact of three references. Job Family Postdoctoral Job Profile Postdoctoral Appointee Worker Type Long-Term (Fixed Term) Time Type Full time The expected hiring range for this position is $70,758.00-$117,925.00. Please note that the pay range information is a general guideline only. The pay offered to a selected candidate will be determined based on factors such as, but not limited to, the scope and responsibilities of the position, the qualifications of the selected candidate, business considerations, internal equity, and external market pay for comparable jobs. Additionally, comprehensive benefits are part of the total rewards package. Click here to view Argonne employee benefits! As an equal employment opportunity employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a safe and welcoming workplace that fosters collaborative scientific discovery and innovation. Argonne encourages everyone to apply for employment. Argonne is committed to nondiscrimination and considers all qualified applicants for employment without regard to any characteristic protected by law. Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department. All Argonne offers of employment are contingent upon a background check that includes an assessment of criminal conviction history conducted on an individualized and case-by-case basis. Please be advised that Argonne positions require upon hire (or may require in the future) for the individual be to obtain a government access authorization that involves additional background check requirements. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment.

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