title: X-ray photoemission analysis of clean and carbon monoxide-chemisorbed platinum(111) stepped surfaces using a curved crystal.
abstract: Surface chemistry and catalysis studies could significantly gain from the systematic variation of surface active sites, tested under the very same conditions. Curved crystals are excellent platforms to perform such systematics, which may in turn allow to better resolve fundamental properties and reveal new phenomena. This is demonstrated here for the carbon monoxide/platinum system. We curve a platinum crystal around the high-symmetry (111) direction and carry out photoemission scans on top. This renders the spatial core-level imaging of carbon monoxide adsorbed on a 'tunable' vicinal surface, allowing a straightforward visualization of the rich chemisorption phenomenology at steps and terraces. Through such photoemission images we probe a characteristic elastic strain variation at stepped surfaces, and unveil subtle stress-release effects on clean and covered vicinal surfaces. These results offer the prospect of applying the curved surface approach to rationally investigate the chemical activity of surfaces under real pressure conditions.
authors.affiliation: Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Spain.|Brookhaven National Laboratory, Photon Sciences Directorate, NSLS II, Upton, New York, New York 11973, USA.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Walter
authors.affiliation: Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018 San Sebastian, Spain.
authors.forename: Frederik
authors.initials: F
authors.lastname: Schiller
authors.affiliation: Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018 San Sebastian, Spain.|IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain.
authors.forename: Martina
authors.initials: M
authors.lastname: Corso
authors.affiliation: Department of Physics, 22 100 Lund University, Lund, Sweden.
authors.forename: Lindsay R
authors.initials: LR
authors.lastname: Merte
authors.affiliation: Department of Physics, 22 100 Lund University, Lund, Sweden.
authors.forename: Florian
authors.initials: F
authors.lastname: Bertram
authors.affiliation: Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018 San Sebastian, Spain.
authors.forename: Jorge
authors.identifier: http://orcid.org/0000-0003-2698-2543
authors.initials: J
authors.lastname: Lobo-Checa
authors.affiliation: Department of Physics, 22 100 Lund University, Lund, Sweden.
authors.forename: Mikhail
authors.initials: M
authors.lastname: Shipilin
authors.affiliation: Department of Physics, 22 100 Lund University, Lund, Sweden.
authors.forename: Johan
authors.initials: J
authors.lastname: Gustafson
authors.affiliation: Department of Physics, 22 100 Lund University, Lund, Sweden.
authors.forename: Edvin
authors.initials: E
authors.lastname: Lundgren
authors.affiliation: Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Spain.|Departamento Física de Materiales, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain.
authors.forename: Anto N X
authors.initials: AN
authors.lastname: Brión-Ríos
authors.affiliation: Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Spain.|IKERBASQUE, Basque Foundation for Science, E-48011 Bilbao, Spain.
authors.forename: Pepa
authors.initials: P
authors.lastname: Cabrera-Sanfelix
authors.affiliation: Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Spain.|Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018 San Sebastian, Spain.
authors.forename: Daniel
authors.initials: D
authors.lastname: Sánchez-Portal
authors.affiliation: Donostia International Physics Centre, Paseo Manuel de Lardizabal 4, 20018 San Sebastian, Spain.|Centro de Física de Materiales CSIC/UPV-EHU-Materials Physics Center, Manuel Lardizabal 5, 20018 San Sebastian, Spain.|Departamento Física Aplicada I, Universidad del País Vasco, 20018 San Sebastian, Spain.
authors.forename: J Enrique
authors.initials: JE
authors.lastname: Ortega