ARPES One-Cube
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
Methods
Remote access
depends on experiment - please discuss with Instrument Scientist
| Instrument data | |
|---|---|
| Phone (~49 30 8062-) | 14696 |
| Beam availability | 12h/d |
| Source | UE112 (Elliptical Undulator) |
| Monochromator | PGM 2 |
| Energy range (at experiment) | tbd |
| Energy resolution | < 1 meV for E < 100 eV |
| Flux | >1013 (photons/s/0.1%bw/100 mA) |
| Polarisation | • linear any angle • circular |
| Focus size (hor. x vert.) | 250µm x variable (typically ~40µm) |
| Temperature range | 1 - 50 K |
| Pressure range | For details contact the Instrument Scientist. |
| Detector | Scienta DA30L Electron Spectrometer |
| Manipulators | 3He Cryomanipulator with 3 translational and one rotational degree of freedom |
| Sample holder compatibility | For details contact the Instrument Scientist. |
| Additional equipment | Preparation facilities:
• Ion gun for sample cleaning • Low temperature (< 700 K) sample heater • 4-grid LEED optics • Evaporators can be mounted on request |
| Additional information | Details beamline UE112_PGM-2b |
This experiment is built in a collaborative effort by the IFW Dresden, TU Dresden and the HZB.