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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:
May 2025: Brand new full band structure of a layered telluride.
Apr 2025: Matthias Escher from FOCUS is here helping us perfect our expertise on the nanoESCA.
Feb 2025: Routine measurements of spin texture demonstrated! EPSILON demonstrates spin texture in Bi2Se3, and revealing for the first time the complex spin texture in the Weyl semimetal MoTe2.
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!
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