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description Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2024Embargo end date: 01 Jan 2023 Switzerland, United Kingdom, Germany, Germany, ItalyPublisher:American Physical Society (APS) Funded by:EC | CALIPSOplusEC| CALIPSOplusCurran Kalha; Laura E. Ratcliff; Giorgio Colombi; Christoph Schlueter; Bernard Dam; Andrei Gloskovskii; Tien-Lin Lee; Pardeep K. Thakur; Prajna Bhatt; Yujiang Zhu; Jürg Osterwalder; Francesco Offi; Giancarlo Panaccione; Anna Regoutz;Metal hydrides are potential candidates for applications in hydrogen-related technologies, such as energy storage, hydrogen compression, and hydrogen sensing, to name just a few. However, understanding the electronic structure and chemical environment of hydrogen within them remains a key challenge. This work presents a new analytical pathway to explore these aspects in technologically relevant systems using hard x-ray photoelectron spectroscopy (HAXPES) on thin films of two prototypical metal dihydrides: YH2−δ and TiH2−δ. By taking advantage of the tunability of synchrotron radiation, a nondestructive depth profile of the chemical states is obtained using core-level spectra. Combining experimental valence-band (VB) spectra collected at varying photon energies with theoretical insights from density functional theory (DFT) calculations, a description of the bonding nature and the role of d versus sp contributions to states near the Fermi energy are provided. Moreover, a reliable determination of the enthalpy of formation is proposed by using experimental values of the energy position of metal s-band features close to the Fermi energy in the HAXPES VB spectra. Published by the American Physical Society 2024
IRIS Cnr arrow_drop_down Zurich Open Repository and ArchiveArticle . 2024License: CC BYData sources: Zurich Open Repository and ArchiveUniversity of Bristol: Bristol ResearchArticle . 2024Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.48550/ar...Article . 2023License: arXiv Non-Exclusive DistributionData sources: DataciteAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/prxenergy.3.013003&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 0 citations 0 popularity Average influence Average impulse Average 
Powered by BIP!more_vert IRIS Cnr arrow_drop_down Zurich Open Repository and ArchiveArticle . 2024License: CC BYData sources: Zurich Open Repository and ArchiveUniversity of Bristol: Bristol ResearchArticle . 2024Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.48550/ar...Article . 2023License: arXiv Non-Exclusive DistributionData sources: DataciteAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/prxenergy.3.013003&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2005 Italy, SwitzerlandPublisher:Elsevier BV Paolicelli G; Fondacaro A; Offi F; Stefani G; Cautero G; Cautero M; Krastanov B; Lacovig P; Pittana P; Sergo R; Tommasini R; Torelli P; Sacchi M; Grioni M; Monaco G; Panaccione G;handle: 11368/2794613 , 20.500.14243/158337 , 11590/124582
We present recent results obtained with a novel spectrometer developed within the EU projectVOLPE (VOLume PhotoEmission from solids with synchrotron radiation), now operational at ESRF (Beamline ID16), where we were able to achieve high energy resolution as well as good statistics photoemission spectra up to 6–8 keV of photoelectron kinetic energy. The spectrometer is a hemispherical deflector analyzer with electrostatic input lens and 2D position sensitive detector. Ag 3d, Au 4f and valence band spectra have been measured from polycrystalline Ag and Au, displaying an overall energy resolution (photons + analyzer) of about 71 meV at 6 keV, as measured at 18K on the Fermi edge. The corresponding resolving power of 8×104 is one of the highest values achieved in photoemission measurements from solid samples.
Journal of Electron ... arrow_drop_down Journal of Electron Spectroscopy and Related PhenomenaArticle . 2005 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefArchivio della Ricerca - Università degli Studi Roma TreArticle . 2005Data sources: Archivio della Ricerca - Università degli Studi Roma TreJournal of Electron Spectroscopy and Related PhenomenaJournalData sources: Microsoft Academic GraphAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.elspec.2005.01.114&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu10 citations 10 popularity Average influence Top 10% impulse Top 10% Powered by BIP!more_vert Journal of Electron ... arrow_drop_down Journal of Electron Spectroscopy and Related PhenomenaArticle . 2005 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefArchivio della Ricerca - Università degli Studi Roma TreArticle . 2005Data sources: Archivio della Ricerca - Università degli Studi Roma TreJournal of Electron Spectroscopy and Related PhenomenaJournalData sources: Microsoft Academic GraphAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.elspec.2005.01.114&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu
description Publicationkeyboard_double_arrow_right Article , Other literature type , Preprint 2024Embargo end date: 01 Jan 2023 Switzerland, United Kingdom, Germany, Germany, ItalyPublisher:American Physical Society (APS) Funded by:EC | CALIPSOplusEC| CALIPSOplusCurran Kalha; Laura E. Ratcliff; Giorgio Colombi; Christoph Schlueter; Bernard Dam; Andrei Gloskovskii; Tien-Lin Lee; Pardeep K. Thakur; Prajna Bhatt; Yujiang Zhu; Jürg Osterwalder; Francesco Offi; Giancarlo Panaccione; Anna Regoutz;Metal hydrides are potential candidates for applications in hydrogen-related technologies, such as energy storage, hydrogen compression, and hydrogen sensing, to name just a few. However, understanding the electronic structure and chemical environment of hydrogen within them remains a key challenge. This work presents a new analytical pathway to explore these aspects in technologically relevant systems using hard x-ray photoelectron spectroscopy (HAXPES) on thin films of two prototypical metal dihydrides: YH2−δ and TiH2−δ. By taking advantage of the tunability of synchrotron radiation, a nondestructive depth profile of the chemical states is obtained using core-level spectra. Combining experimental valence-band (VB) spectra collected at varying photon energies with theoretical insights from density functional theory (DFT) calculations, a description of the bonding nature and the role of d versus sp contributions to states near the Fermi energy are provided. Moreover, a reliable determination of the enthalpy of formation is proposed by using experimental values of the energy position of metal s-band features close to the Fermi energy in the HAXPES VB spectra. Published by the American Physical Society 2024
IRIS Cnr arrow_drop_down Zurich Open Repository and ArchiveArticle . 2024License: CC BYData sources: Zurich Open Repository and ArchiveUniversity of Bristol: Bristol ResearchArticle . 2024Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.48550/ar...Article . 2023License: arXiv Non-Exclusive DistributionData sources: DataciteAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/prxenergy.3.013003&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!more_vert IRIS Cnr arrow_drop_down Zurich Open Repository and ArchiveArticle . 2024License: CC BYData sources: Zurich Open Repository and ArchiveUniversity of Bristol: Bristol ResearchArticle . 2024Data sources: Bielefeld Academic Search Engine (BASE)https://dx.doi.org/10.48550/ar...Article . 2023License: arXiv Non-Exclusive DistributionData sources: DataciteAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1103/prxenergy.3.013003&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2005 Italy, SwitzerlandPublisher:Elsevier BV Paolicelli G; Fondacaro A; Offi F; Stefani G; Cautero G; Cautero M; Krastanov B; Lacovig P; Pittana P; Sergo R; Tommasini R; Torelli P; Sacchi M; Grioni M; Monaco G; Panaccione G;handle: 11368/2794613 , 20.500.14243/158337 , 11590/124582
We present recent results obtained with a novel spectrometer developed within the EU projectVOLPE (VOLume PhotoEmission from solids with synchrotron radiation), now operational at ESRF (Beamline ID16), where we were able to achieve high energy resolution as well as good statistics photoemission spectra up to 6–8 keV of photoelectron kinetic energy. The spectrometer is a hemispherical deflector analyzer with electrostatic input lens and 2D position sensitive detector. Ag 3d, Au 4f and valence band spectra have been measured from polycrystalline Ag and Au, displaying an overall energy resolution (photons + analyzer) of about 71 meV at 6 keV, as measured at 18K on the Fermi edge. The corresponding resolving power of 8×104 is one of the highest values achieved in photoemission measurements from solid samples.
Journal of Electron ... arrow_drop_down Journal of Electron Spectroscopy and Related PhenomenaArticle . 2005 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefArchivio della Ricerca - Università degli Studi Roma TreArticle . 2005Data sources: Archivio della Ricerca - Università degli Studi Roma TreJournal of Electron Spectroscopy and Related PhenomenaJournalData sources: Microsoft Academic GraphAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.elspec.2005.01.114&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu10 citations 10 popularity Average influence Top 10% impulse Top 10% Powered by BIP!more_vert Journal of Electron ... arrow_drop_down Journal of Electron Spectroscopy and Related PhenomenaArticle . 2005 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefArchivio della Ricerca - Università degli Studi Roma TreArticle . 2005Data sources: Archivio della Ricerca - Università degli Studi Roma TreJournal of Electron Spectroscopy and Related PhenomenaJournalData sources: Microsoft Academic GraphAll Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.1016/j.elspec.2005.01.114&type=result"></script>'); --> </script>For further information contact us at helpdesk@openaire.eu