Modeling Tip Performance for Combined STM-luminescence and aperture-SNOM Scanning Probe: Spatial Resolution and Collection Efficiency
2008 (English)In: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 254, no 23, 7861-7863 p.Article in journal (Refereed) Published
Finite-element simulations of the performance of the tip intended for use in combined aperture-SNOM and the scanning tunneling microscope (STM)-luminescence microscopy are presented. Tip geometry and the role of the opening in the protective metal coating were addressed. It is shown that the tip shape can affect transmittance for the excitation SNOM mode by nearly two orders of magnitude and the metal coating can enhance collection efficiency for the STM-luminescence mode. Desired tip configuration can be chosen based on the interplay between the improving collection efficiency and the deteriorating spatial resolution with increasing opening size.
Place, publisher, year, edition, pages
2008. Vol. 254, no 23, 7861-7863 p.
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-48933DOI: 10.1016/j.apsusc.2008.03.005ISI: 000259172600077OAI: oai:DiVA.org:kth-48933DiVA: diva2:458877
QC 201111292011-11-242011-11-242011-11-29Bibliographically approved