Electron Photoemission Spectroscopy and Imaging Laboratory for Observation at the Nanoscale (EPSILON)-UArizona

Welcome to EPSILON, a user facility for advanced photoelectron spectroscopy and surface analysis. Our facility is located on the University of Arizona, Tucson campus in southern Arizona.

Check out recent work at EPSILON:

Apr 2024: The nanoESCA is back, with an imaging spin filter and installed. Check out here for some pictures of the instrument and installation.

Nov 2023: The nanoESCA flies to Germany for an imaging spin filter upgrade.

August 2023: First data of Cu(110), Cu(110)-O(2x1) and striped phase. See here for a teaser.

June 2023: EPSILON to be upgraded with the first imaging spin filter set-up in the US. We will be able to measure in-plane spin component-resolved momentum maps, funded by AFOSR.

March 2023: EPSILON commissioned and open for business! Do you need chemical composition or band structure measurements, at cold temperatures, from small samples, and across the full Brillouin zone? Let us know how we can help!