Paulina Majchrzak

All Publications

• A spatial- and angle-resolved photoemission spectroscopy beamline based on capillary optics at ASTRID2 REVIEW OF SCIENTIFIC INSTRUMENTS Jones, A. H., Majchrzak, P., Volckaert, K., Biswas, D., Andersen, J., Hoffmann, S. V., Jones, N. C., Jiang, Z., Chen, Y. P., Jensen, M., Stenshoj, R., Bianchi, M., Hofmann, P., Ulstrup, S., Miwa, J. A. 2025; 96 (2)

  Abstract

  Angle-resolved photoemission spectroscopy (ARPES) with spatial resolution is emerging as a powerful investigative tool for the study of operational mesoscale devices and quantum materials. Here, we introduce AU-SGM4, an extreme ultraviolet beamline based at the ASTRID2 synchrotron, which is designed around an achromatic elliptical capillary optic that focuses the synchrotron light down to a lateral beam spot size of 4 μm. The beamline offers a low photon energy range of 12-150 eV, ideal for probing detailed energy- and momentum-resolved electronic structures of materials. We utilize a custom-made piezoelectric motor system with 11 degrees of freedom for precisely moving the sample and capillary optic. We demonstrate exceptional stability in beam positioning on samples across the entire available photon energy range. To showcase the capabilities of the AU-SGM4 beamline, we present simultaneous ARPES measurements and in situ gating of a graphene device and probe the nominally inaccessible microscopic-sized domains of MnBi6Te10 to obtain the energy- and momentum-dependent dispersion for each domain.

  View details for DOI 10.1063/5.0240744

  View details for Web of Science ID 001469478000002

  View details for PubMedID 40019339

• Attosecond emission delay from atoms and molecules using multi-dimensional XUV interferometry NEW JOURNAL OF PHYSICS Wyatt, A. S., Lloyd, D. T., Chapman, R. T., Thornton, C., Majchrzak, P., Jones, A. H., Springate, E., O'Keeffe, K. 2024; 26 (11)

  View details for DOI 10.1088/1367-2630/ad8f5b

  View details for Web of Science ID 001362373000001

• Access to the full three-dimensional Brillouin zone with time resolution, using a new tool for pump-probe angle-resolved photoemission spectroscopy. The Review of scientific instruments Majchrzak, P., Zhang, Y., Kuibarov, A., Chapman, R., Wyatt, A., Springate, E., Borisenko, S., Buchner, B., Hofmann, P., Sanders, C. E. 2024; 95 (6)

  Abstract

  Here, we report the first time- and angle-resolved photoemission spectroscopy (TR-ARPES) with the new Fermiologics "FeSuMa" analyzer. The new experimental setup has been commissioned at the Artemis laboratory of the UK Central Laser Facility. We explain here some of the advantages of the FeSuMa for TR-ARPES and discuss how its capabilities relate to those of hemispherical analyzers and momentum microscopes. We have integrated the FeSuMa into an optimized pump-probe beamline that permits photon-energy (i.e., kz)-dependent scanning, using probe energies generated from high harmonics in a gas jet. The advantages of using the FeSuMa in this situation include the possibility of taking advantage of its "fisheye" mode of operation.

  View details for DOI 10.1063/5.0179752

  View details for PubMedID 38829212

• Programming twist angle and strain profiles in 2D materials SCIENCE Kapfer, M., Jessen, B. S., Eisele, M. E., Fu, M., Danielsen, D. R., Darlington, T. P., Moore, S. L., Finney, N. R., Marchese, A., Hsieh, V., Majchrzak, P., Jiang, Z., Biswas, D., Dudin, P., Avila, J., Watanabe, K., Taniguchi, T., Ulstrup, S., Boggild, P., Schuck, P. J., Basov, D. N., Hone, J., Dean, C. R. 2023; 381 (6658): 677-681

  View details for DOI 10.1126/science.ade9995

  View details for Web of Science ID 001167286600031