Valence state determines the band magnetocrystalline anisotropy in 2 D rare-earth / noble-metal compounds

M. Blanco-Rey, 2 R. Castrillo-Bodero, K. Ali, 2 P. Gargiani, F. Bertran, P. M. Sheverdyaeva, J.E. Ortega, 3, 2 L. Fernandez, 3 and F. Schiller 2 1 Departamento de Poĺımeros y Materiales Avanzados: F́ısica, Qúımica y Tecnoloǵıa, Universidad del Páıs Vasco UPV-EHU, 20018 San Sebastián, Spain 2 Donostia International Physics Center, E-20018 Donostia-San Sebastián, Spain 3 Centro de F́ısica de Materiales CSIC/UPV-EHU-Materials Physics Center, E-20018 San Sebastián, Spain 4 ALBA Synchrotron Light Source, Carretera BP 1413 km 3.3, 08290 Cerdanyola del Vallès, Spain 5 Synchrotron SOLEIL, CNRS-CEA, L’Orme des Merisiers, Saint-Aubin-BP48, 91192 Gif-sur-Yvette, France 6 Instituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, 34149 Trieste, Italy 7 Departamento de F́ısica Aplicada I, Universidad del Páıs Vasco UPV/EHU, E-20018 San Sebastián, Spain (Dated: September 15, 2021)