A. Minkevich
Auf Deutsch

Research & Publications

Before moving to industry, I spent over a decade in physics research — a path that took me from Minsk to Marseille to Karlsruhe, and shaped how I approach engineering problems to this day: build a model, test it against reality, iterate.

My field was X-ray diffraction physics and coherent diffraction imaging: developing algorithms that reconstruct strain and displacement fields inside nanostructures from their diffraction patterns — an inverse problem with no direct solution, solved iteratively. (In hindsight, gradient-based optimization of ill-posed inverse problems was good preparation for understanding modern machine learning.)

With Edwin Fohtung during a coherent X-ray diffraction experiment at the ESRF synchrotron, Grenoble, 2008.
With Edwin Fohtung — then a PhD student, now a professor at Rensselaer Polytechnic Institute — during a coherent X-ray diffraction experiment at the ESRF synchrotron, Grenoble (2008).

Research career

  1. Karlsruhe Institute of Technology (KIT)

    Research Scientist, Institute for Photon Science and Synchrotron Radiation (2007–2013)

    Developed methods and algorithms for coherent X-ray scattering data analysis at the ANKA synchrotron; conducted experiments at ANKA and ESRF (Grenoble); supervised diploma students and doctoral candidates.

  2. Université Paul Cézanne / CNRS, Marseille

    Postdoctoral Researcher (2005–2007)

    Numerical and experimental X-ray diffraction studies of strained microelectronic structures, in collaboration with ST Microelectronics. Developed the iterative phase-retrieval approach for inhomogeneously strained crystals (Phys. Rev. B 76, 104106).

  3. Belarusian State University, Minsk

    PhD Student / Research Fellow (2000–2005)

    PhD in Theoretical Physics (2004). Co-developed LEPTOS, a commercial X-ray scattering simulation package, in cooperation with Bruker AXS, Karlsruhe.

Education

Selected publications

  1. A. A. Minkevich, M. Köhl, S. Escoubas, O. Thomas, T. Baumbach. Retrieval of the atomic displacements in the crystal from the coherent X-ray diffraction pattern. Journal of Synchrotron Radiation 21, 774–783 (2014).
  2. M. Köhl, A. A. Minkevich, T. Baumbach. Improved success rate and stability for phase retrieval by including randomized overrelaxation in the hybrid input output algorithm. Optics Express 20(15), 17093–17106 (2012).
  3. A. A. Minkevich, E. Fohtung, T. Slobodskyy, M. Riotte, D. Grigoriev, M. Schmidbauer, A. C. Irvine, V. Novák, V. Holý, T. Baumbach. Selective coherent x-ray diffractive imaging of displacement fields in (Ga,Mn)As/GaAs periodical wires. Physical Review B 84, 054113 (2011).
  4. A. A. Minkevich, T. Baumbach, M. Gailhanou, O. Thomas. Applicability of an iterative inversion algorithm to the diffraction patterns from inhomogeneously strained crystals. Physical Review B 78, 174110 (2008).
  5. A. A. Minkevich, M. Gailhanou, J.-S. Micha, B. Charlet, V. Chamard, O. Thomas. Inversion of the diffraction pattern from an inhomogeneously strained crystal using an iterative algorithm. Physical Review B 76, 104106 (2007).
  6. I. D. Feranchuk, S. I. Feranchuk, A. A. Minkevich, A. P. Ulyanenkov. Description of x-ray reflection and diffraction from periodical multilayers and superlattices by the eigenwave method. Physical Review B 68, 235307 (2003).
  7. I. D. Feranchuk, A. A. Minkevich, A. P. Ulyanenkov. About non-Gaussian behaviour of the Debye-Waller factor at large scattering vectors. European Physical Journal Applied Physics 24, 21–26 (2003).
  8. I. D. Feranchuk, A. A. Minkevich, A. P. Ulyanenkov. Estimation of the Debye temperature for crystals with polyatomic unit cell. European Physical Journal Applied Physics 19, 95–101 (2002).

Refereed journal articles, plus 15+ conference contributions including invited lectures at XTOP, Coherence, and synchrotron radiation schools.

Full publication list (PDF) →