1^3-ARPES ultra high resolution photoemission instrument /UE112

The 1^3 ARPES instrument is installed at the UE112_PGM-2b low-energy beamline, which is designed to deliver a high flux of photons with very high energy resolution in the range from 5 to 250 eV. In addition to its normal operation with grazing incidence angles, the monochromator also offers a normal incidence option to retain flux and polarization at the lowest energies.

The 1^3 ARPES instrument is designed for angle-resolved photoelectron spectroscopy at the highest energy resolution and ultimately low sample temperatures. In this system, all contributors to experimental broadening – the resolution of both the excitation source and the electron energy analyzer as well as the sample temperature – have been reduced to ≤1 meV or their equivalent, yielding the name of the station: 1 meV x 1 meV x 1 K = 1^3.

Selected Applications:

• High resolution electronic structure measurements at low temperature to study for instance unconventional superconductors and heavy-fermion materials
• study the effect of low temperature phase transitions (for example magnetic) on the electronic structure

Inside One-Cubed ARPES

Methods

ARPES, UPS, LEED

Remote access

depends on experiment - please discuss with Instrument Scientist