RT Journal Article
T1 Valence band circular dichroism in non-magnetic Ag/Ru(0001) at normal emission
A1 Mascaraque Susunaga, Arantzazu
A1 Mentes, T. Onur
A1 McCarty, Kevin F
A1 Marcos, José
A1 Schmid, Andreas K.
A1 Locatelli, Andrea
A1 Figuera, Juan de la
AB For the non-magnetic system of Ag films on Ru(0001), we have measured the circular dichroism of photoelectrons emitted along the surface normal, the geometry typically used in photoemission electron microscopy. Photoemission spectra were acquired from micrometer-sized regions having uniformly thick Ag films on a single, atomically flat Ru terrace. For a single Ag layer, we find a circular dichroism that exceeds 6% at the d-derived band region around 4.5 eV binding energy. The dichroism decreases as the Ag film thickness increases to three atomic layers. We discuss the origin of the circular dichroism in terms of the symmetry lowering that can occur even in normal emission.
PB Institute of Physics
SN 0953-8984
YR 2011
FD 2011-08-03
LK https://hdl.handle.net/20.500.14352/44462
UL https://hdl.handle.net/20.500.14352/44462
LA eng
NO © Institute of PhysicsThis research was supported by the U.S. Department of Energy under contracts No. DEAC04-94AL85000 and DE-AC02-05CH11231 and by the Spanish Ministry of Science and Innovation under Projects No. MAT2009-14578-C03-01 and No. FIS2007-64982.
NO US Department of Energy
NO Spanish Ministry of Science and Innovation
DS Docta Complutense
RD 31 dic 2025