ARPES spectroscopy component

Angular Resolved Photoemission Spectroscopy

Photoelectron Spectroscopy (PES) is a technique where the sample is illuminated with light of a certain frequency, releasing electrons from the surface which can be analysed in an electron spectrometer to give a spectrum of their energy. The spectrum produced contains peaks which are characteristic of the chemical composition of the surface. Angular resolved photoemission spectroscopy (ARPES) is an extension of PES where the angular distribution of the emitted electrons is also measured. The emission angle of the electrons is determined by the in-plane momentum of the electron within the surface and can be used to obtain useful information about the electron band structure of the material. The valence band electrons in a material are important to determine the chemical reactivity and electrical properties of the material. With ARPES it is possible to directly determine the band structure of the occupied and unoccupied states.

With our partner, SPECS, we are able to offer ARPES systems with ultimate energy and angle resolution and with highly optimised system properties such as low residual magnetic field, ultralow sample temperature and sample geometry.

ARPES spectroscopy component
angle resolved photoemission spectroscopy


Band Mapping of:'

• Semiconductors
• Metals
• Single layer / 2D materials e.g. Graphene.
• Transition metal dichalcogenides / oxides
• Topological materials
• Quantum well states

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