Regensburg 2025 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 25: Poster 2D Materials: Electronic Structure and Exitations (joint session O/HL)

HL 25.8: Poster

Tuesday, March 18, 2025, 13:30–15:30, P3

FinEstBeAMS: a multipurpose VUV and soft X-ray beamline at the max iv laboratory — •Weimin Wang, Antti Kivimäki, Kirill Chernenko, Calle Preger, and Stephan Appelfeller — MAX IV Laboratory, Lund University, PO Box 118, SE-22100 Lund, Sweden

The Finnish-Estonian Beamline for Atmospheric and Materials Science (FinEstBeAMS), located at the 1.5 GeV storage ring of the MAX IV Laboratory (Lund, Sweden), is a multidisciplinary beamline that was designed to fulfil the various needs of scientific communities in atomic, molecular and optical research, surface science, and photoluminescence research.

The gas-phase end station is equipped for electron and time-of-flight ion spectroscopies in low-density matter, while the photoluminescence end station focuses on luminescence spectroscopy of solid samples. The solid-state end station is dedicated to photoelectron and X-ray absorption spectroscopy of surfaces and interfaces, utilizing a hemispherical electron energy analyzer (PHOIBOS 150 2D-DLD from SPECS). The sample is positioned via a 5-axis motorized manipulator, offering three linear and two rotational motions (polar and azimuthal). A cryostat integrated into the manipulator enables sample cooling with liquid helium (~50 K) and nitrogen (~90 K). Additionally, a preparation chamber allows for sample treatment and analysis using supplementary techniques.

Keywords: ARPES; XPS; LEED; epitaxy growth