% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Roesner:452125, author = {Roesner, Benedikt and Finizio, Simone and Koch, Frieder and Doering, Florian and Guzenko, Vitaliy A. and Langer, Manuel and Kirk, Eugenie and Watts, Benjamin and Meyer, Markus and Loroña Ornelas, Joshua and Spaeth, Andreas and Stanescu, Stefan and Swaraj, Sufal and Belkhou, Rachid and Ishikawa, Takashi and Keller, Thomas F. and Gross, Boris and Poggio, Martino and Fink, Rainer and Raabe, Joerg and Kleibert, Armin and David, Christian}, title = {{S}oft x-ray microscopy with 7 nm resolution}, journal = {Optica}, volume = {7}, number = {11}, issn = {2334-2536}, address = {Washington, DC}, publisher = {OSA}, reportid = {PUBDB-2020-04517}, pages = {1602 - 1608}, year = {2020}, abstract = {The availability of intense soft x-ray beams with tunable energy and polarization has pushed the development of highlysensitive, element-specific, and noninvasive microscopy techniques to investigate condensed matter with high spatialand temporal resolution. The short wavelengths of soft x-rays promise to reach spatial resolutions in the deep single-digitnanometer regime, providing unprecedented access to magnetic phenomena at fundamental length scales. Despiteconsiderable efforts in soft x-ray microscopy techniques, a two-dimensional resolution of 10 nm has not yet been surpassedin direct imaging. Here, we report on a significant step beyond this long-standing limit by combining newlydeveloped soft x-ray Fresnel zone plate lenses with advanced precision in scanning control and careful optical design.With this approach, we achieve an image resolution of 7 nm. By combining this highly precise microscopy techniquewith the x-ray magnetic circular dichroism effect,we reveal dimensionality effects in an ensemble of interacting magneticnanoparticles. Such effects are topical in current nanomagnetism research and highlight the opportunities of highresolutionsoft x-ray microscopy in magnetism research and beyond.}, cin = {DOOR ; HAS-User / FS-NL}, ddc = {620}, cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-NL-20120731}, pnm = {6214 - Nanoscience and Materials for Information Technology (POF3-621) / $NFFA-Europe_supported$ - Technically supported by Nanoscience Foundries and Fine Analysis Europe $(2020_Join2-NFFA-Europe_funded)$ / NFFA-Europe - NANOSCIENCE FOUNDRIES AND FINE ANALYSIS - EUROPE (654360)}, pid = {G:(DE-HGF)POF3-6214 / $G:(DE-HGF)2020_Join2-NFFA-Europe_funded$ / G:(EU-Grant)654360}, experiment = {EXP:(DE-H253)Nanolab-04-20150101}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000593180100004}, doi = {10.1364/OPTICA.399885}, url = {https://bib-pubdb1.desy.de/record/452125}, }