Ultrathin lead oxide film on Pb(111) and its application in single spin detection

Ying-Shuang Fu; Shuai-Hua Ji; Tong Zhang; Xi Chen; Xu-Cun Ma; Jin-Feng Jia; Qi-Kun Xue
August 2009
Applied Physics Letters;8/10/2009, Vol. 95 Issue 6, p063107
Academic Journal
The morphology and electronic structure of ultrathin PbO films on silicon-supported Pb islands have been investigated with a low temperature scanning tunneling microscope. It is found that the PbO film acts as an insulating layer to electronically decouple the adsorbates from the metallic substrate. Due to the increased lifetime of spin excitation, the Zeeman splitting of individual manganese phthalocyanine molecules adsorbed on PbO could be detected with spin-flip inelastic tunneling spectroscopy. The ultrathin insulating films like PbO provide an effective way to control the electronic coupling in the nanometer scale.


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