2024-03-29T01:06:17Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/535352020-05-22T10:37:30Zcom_10261_115com_10261_3col_10261_368
Direct resolution of unoccupied states in solids via two-photon photoemission
Schattke, W.
Krasovskii, E. E.
Díez Muiño, Ricardo
Echenique, Pedro M.
Nonlinear effects in photoemission are shown to open an access to the band structure of unoccupied states in solids, totally different from hitherto used photoemission spectroscopy. Despite its second-order nature, strong resonant transitions occur, obeying exact selection rules of energy, crystal symmetry, and momentum. Ab initio calculations are performed to demonstrate that such structures are present in low-energy laser spectroscopy experimental measurements on Si. Similar resonances are predicted in ultraviolet angle-resolved photoemission spectra, as shown with a theoretical calculation on bulk Al. © 2008 The American Physical Society.
Financial support by DFG under Contract No. FOR353 and the Spanish MEC (Grant No. FIS2007- 66711-C02-02) is acknowledged.
Peer Reviewed
2012-07-18T12:37:59Z
2012-07-18T12:37:59Z
2008
2012-07-18T12:37:59Z
artículo
http://purl.org/coar/resource_type/c_6501
doi: 10.1103/PhysRevB.78.155314
issn: 1098-0121
e-issn: 1550-235X
Physical Review B 78(15): 155314 (2008)
http://hdl.handle.net/10261/53535
10.1103/PhysRevB.78.155314
en
open
American Physical Society