
Currently
a major aspect of the group activities is the development of a state-of-the-art
ARPES apparatus. The goal is to achieve an energy resolution in the sub-meV
regime combined with angular resolution better than 0.1 degrees, as compared
to the 2-10 meV and the 0.2-0.3 deg. available in state-of-the-art ARPES
systems. In order to obtain these performances, a new prototype of electron
spectrometer (SPECS
2D-Phoibos150) will be installed on an ultra-high vacuum m-metal
chamber together with a monochromatized
high-brightness ultra-violet photon source (SPECS
UVS300). The second aspect of this effort is the development of an
innovative low- temperature sample manipulator capable of reaching temperatures
as low as 2.2 K while providing sample access for the incoming photons
and to collect the outgoing electrons, and two rotational degrees of freedom
on the sample stage in order to perform angle-resolved experiments. In
addition to the above essential components, the system will also include
a vacuum chamber dedicated to the preparation and structural/chemical characterization
of the sample surfaces, and to the growth and fabrication of 1D and 2D
nanostructures with molecular-beam epitaxy methods.
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