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						<h1 itemprop="headline">Seminar - Massimo Tallarida: &quot;LOREA: the ARPES beamline at ALBA Synchrotron&quot;</h1>
						

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														Fredag 23. januar 2026,
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									<p><strong>Speaker:</strong> Massimo Tallarida, <em>ALBA Synchrotron, Carrer de la llum 2-26, 08290, Cerdanyola del Vallès, Spain, </em><a href="mailto:mtallarida@cells.es">mtallarida@cells.es</a></p>
<p><strong>Titel:</strong> LOREA: the ARPES beamline at ALBA Synchrotron</p>
<p><strong>Abstract:</strong></p>
<p class="text-justify">LOREA (<em>flower&nbsp;</em>in basque language), started its operation in 2021 and is dedicated to electronic structure investigation of quantum materials by means of Angle Resolved Photo-Emission Spectroscopy (ARPES).&nbsp;</p>
<p class="text-justify">The beamline covers the photon energy range of 10-1000 eV, with continuously variable polarization, resolving power of more than 104&nbsp;in the whole range, and a spot size of about 10x10 μm2. The beamline allows to perform high resolution VUV ARPES as well as Soft X-ray ARPES and resonant PES. The MBS A-1 hemispherical electron analyser can be used in the deflector map mode to get isoenergy maps in the energy range 10-600eV, while ARPES is available in the 10-850eV range. The analyser includes an MBS spin manipulator and a Focus-VLEED spin detector to perform Spin-Resolved ARPES in all 6 components at once.&nbsp;</p>
<p class="text-justify">The 6-axes cryo-manipulator can reach low temperatures better than 7.5K and is provided with 4 electrical contacts for characterizing&nbsp;the ARPES samples with transport measurements and to perform "operando" experiments on simple devices with dimensions of the order of about 20 micrometers. The beam positioning is facilitated by a microscope looking at the sample surface in the direction collinear with the beam and with a spatial resolution of about 10μm.&nbsp;</p>
<p class="text-justify">The two preparation chambers allow to sputter clean surfaces and to deposit thin films of a wide range of materials, from noble metals to alkali, organic and rare earth elements. The presence of a plasma source gives a further possibility of cleaning surfaces and to grow oxides or nitrides. Atomic layer deposition (ALD) of oxides is also possible thanks to a customised ALD reactor attached to the main preparation chamber.&nbsp;</p>
<p class="text-justify">Although LOREA is a “young” beamline, an upgrade towards “nano-ARPES” is planned for the next years, when there will be the upgrade of ALBA to the 4<sup>th</sup> generation synchrotron ALBA-II. In this presentation I will show recent results, as well as the future plans.&nbsp;</p>
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