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Observation of structure changes for Li/Cu(111) by photoemission from Li core and quantum-well states
Physical Review B (Condensed Matter)
Via photoemission from discrete quantum-well valence states and the Li 1s core level, three different types of atom rearrangements are observed for Cu͑111͒/Li. In the monolayer coverage range gradual energy shifts for the core-level as well as a quantum-well state reflect a gradual lateral compression of the Li overlayer as more atoms are adsorbed. The onset of Li substitution and formation of a (2ϫ2) structure when, at RT, monolayer Li coverage is exceeded, is monitored via the disappearancedoi:10.1103/physrevb.57.13192 fatcat:ursyrrxhjbfi3ecmoiyplyfxau