Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C)

Physics of Nanoscale Systems (ER-C-1)

Nanoscale quantum devices

We study working nanoscale quantum devices at their operating conditions with highest possible spatial resolution. We do this by combining high-resolution transmission electron microscopy, electromagnetic field mapping, electrical property measurements, and cooling down to 5 K. Our current research interests include superconducting low-T_c and high-T_cJosephson junctions, quantum interferometers (nanoSQUIDs), two-dimensional materials, and van der Waals heterostructure devices. Our aim is to understand the interplay between structure, electrical and magnetic properties at the atomic scale in quantum materials and devices.

Research Topics:

Superconducting nanostructures: low-T_c and high-T_c Josephson junctions and nanoSQUIDs
Contact: Michael Faley
Two-dimensional materials and van der Waals heterostructure devices
Contact: Joachim Thomsen

Points of contact

Prof. Dr. Michael Faley

Scientific staff at ER-C-1

er-c
er-c-1

Building 04.6 /
Room 60

+49 2461/61-4366

E-Mail

Dr. Joachim Thomsen

Scientific Staff at ER-C-1

er-c
er-c-1

Building 05.2 /
Room 3081

+49 2461/61-6364

E-Mail

Selected Publications

Recent publications of the group

M. I. Faley, J. V. Vas, P.-H. Lu, R. E. Dunin-Borkowski, “NanoSQUIDs with proximity effect nanobridge Josephson junctions for future applications in electron microscopy,” IEEE Transactions on Applied Superconductivity, 35, 5, 1600105 (2025). https://doi.org/10.1109/TASC.2024.3502572

J. D. Thomsen, Y. Wang, H. Flyvbjerg, K. Watanabe, T. Taniguchi, P. Narang, F. M Ross. “Direct visualization of defect-controlled diffusion in van der Waals gaps”. Advanced Materials, 36, 39, 2403989 (2024). https://doi.org/10.1002/adma.202403989

M. I. Faley. “Nanodimensional superconducting quantum interference devices”. In: Encyclopedia of Condensed Matter Physics, 2e, 2, 702-711. Oxford: Elsevier (2024). https://doi.org/0.1016/B978-0-323-90800-9.00161-X

J. D. Thomsen, M.-G. Han, A. N. Penn, A. C. Foucher, M. Geiwitz, K. S. Burch, L. Dekanovsky, Z. Sofer, Y. Liu, C. Petrovic, F. M. Ross, Y. Zhu, P. Narang. “Effect of Surface Oxidation and Crystal Thickness on the Magnetic Properties and Magnetic Domain Structures of Cr₂Ge₂Te₆”. ACS Nano, 18, 21, 13458-13467 (2024). https://doi.org/10.1021/acsnano.3c09858

J. Williams, M. I. Faley, J. V. Vas, P. Lu, R. E. Dunin-Borkowski “TEM Sample Preparation of Lithographically Patterned Permalloy Nanostructures on Silicon Nitride Membrane”. Beilstein Journal of Nanotechnology, 15, 1–12 (2024). https://doi.org/10.3762/bjnano.15.1.

M.-G. Han, J. D. Thomsen, J. P. Philbin, J. Mun, E. Park, F. Camino, L. Děkanovský, C. Liu, Z. Sofer, P. Narang, F. M. Ross, Y. Zhu. “Electric-Field Control of Magnetic Skyrmion Chirality in a Centrosymmetric 2D van der Waals Magnet”. arXiv preprint, arXiv:2406.00785 (2024). https://doi.org/10.48550/arXiv.2406.00785

M. I. Faley, J. Williams, P.-H. Lu, R. E. Dunin-Borkowski “TiN-NbN-TiN and Permalloy Nanostructures for Applications in Transmission Electron Microscopy”. Electronics 12, 9, 2144 (2023). https://doi.org/10.3390/electronics12092144

M. I. Faley, R. E. Dunin-Borkowski. “A Self-Flux-Biased NanoSQUID with Four NbN-TiN-NbN Nanobridge Josephson Junctions”, Electronics 11, 1704 (2022).
https://doi.org/10.3390/electronics11111704

M. I. Faley, H. Fiadziushkin, B. Frohn, P. Schüffelgen, R. E. Dunin-Borkowski, “TiN nanobridge Josephson junctions and nanoSQUIDs on SiN-buffered Si”. Supercond. Sci. Technol. 35, 065001 (2022). https://doi.org/10.1088/1361-6668/ac64cd

M. I. Faley, Y. Liu, and R. E. Dunin-Borkowski “Titanium Nitride as a New Prospective Material for NanoSQUIDs and Superconducting Nanobridge Electronics” Nanomaterials 11, 466 (12pp) (2021). https://doi.org/10.3390/nano11020466

M. I. Faley, T. Bikulov, V. Bosboom, A. A. Golubov, R. E. Dunin-Borkowski. “Bulk nanomachining of cantilevers with Nb nanoSQUIDs based on nanobridge Josephson junctions”, Supercond. Sci. Technol. 34, 035014 (2021). https://doi.org/10.1088/1361-6668/abda5c

R. Rodrigo, M. I. Faley, R. E. Dunin-Borkowski. “NanoSQUIDs based on Nb nanobridges”, Journal of Physics: Conference Series 1559, 012011 (2020). https://doi.org/10.1088/1742-6596/1559/1/012011

Last Modified: 17.09.2025

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