A facility for the analysis of the electronic structures of solids and their surfaces by synchrotron radiation photoelectron spectroscopy

TL;DR

This paper describes the development of a specialized synchrotron radiation beamline and end station at Diamond Light Source for high-resolution photoelectron spectroscopy of solids and surfaces, enabling detailed electronic structure analysis.

Contribution

It introduces a new beamline with advanced features like variable polarization, high energy resolution, and a cryogenic sample manipulator for enhanced ARPES studies.

Findings

Achieved energy resolution of 10-15 meV for k-space mapping.

Provided photon flux up to 2×10^13 photons/sec.

Enabled high-precision electronic structure measurements.

Abstract

A synchrotron radiation beamline in the photon energy range of 18 - 240 eV and an electron spectroscopy end station have been constructed at the 3 GeV Diamond Light Source storage ring. The instrument features a variable polarisation undulator, a high resolution monochromator, a re-focussing system to form a beam spot of 50x50 micrometer^2 and an end station for angle-resolved photoelectron spectroscopy (ARPES) including a 6-degrees-of-freedom cryogenic sample manipulator. The beamline design and its performance allow for a highly productive and precise use of the ARPES technique at an energy resolution of 10 - 15 meV for fast k-space mapping studies with a photon flux up to 2 10^13 ph/sec and well below 3 meV for high resolution spectra.