期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.197208
关键词
-
资金
- National Natural Science Foundation
- Ministry of Science and Technology of China
The superexchange mechanism in cobalt phthalocyanine (CoPc) thin films was studied by a low temperature scanning tunneling microscope. The CoPc molecules were found to form one-dimensional antiferromagnetic chains in the film. Collective spin excitations in individual molecular chains were measured with spin-flip associated inelastic electron tunneling spectroscopy. By spatially mapping the spin-flipping channels with submolecular precision, we are able to explicitly identify the specific molecular orbitals that mediate the superexchange interaction between molecules.
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