Molecular orbital imaging of cobalt phthalocyanine on native oxidized copper layers using STM.
To observe molecular orbitals using scanning tunneling microscopy, well-ordered oxidized layers on Cu(001) were fabricated to screen the individual adsorbed cobalt phthalocyanine (CoPc) molecules from the electronic influence of the metal surface. Scanning tunneling microscope images of the molecule on this oxidized layer show similarities to the orbital distribution of the free molecule. The good match between the differential conductance mapping images and the calculated charge distribution at energy levels corresponding to the frontier orbitals of CoPc provides more evidence of the screening of the oxidized layer from interactions between the metal surface and supported molecules.
State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Xiaohongshan West 30, Wuchang, Wuhan 430071, China.
Qinmin
Q
Guo
Min
M
Huang
Zhihui
Z
Qin
Gengyu
G
Cao
D000327:Adsorption; D003300:Copper / Q000378:metabolism*; D004583:Electrons; D007211:Indoles / Q000302:isolation & purification*; D016252:Microscopy, Scanning Tunneling / Q000379:methods*; D015336:Molecular Probe Techniques; D009942:Organometallic Compounds / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D013499:Surface Properties
D007211:Indoles; D009942:Organometallic Compounds; C063633:cobalt phthalocyanine; D003300:Copper