Probing Superexchange Interaction in Molecular Magnets by Spin-Flip Spectroscopy and Microscopy

被引：232

作者：

Chen, Xi ^{[1
]}

Fu, Ying-Shuang ^{[1
,2
]}

Ji, Shuai-Hua ^{[1
,2
]}

Zhang, Tong ^{[1
,2
]}

Cheng, Peng ^{[1
]}

Ma, Xu-Cun ^{[2
]}

Zou, Xiao-Long ^{[1
]}

Duan, Wen-Hui ^{[1
]}

Jia, Jin-Feng ^{[1
]}

Xue, Qi-Kun ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.101.197208

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：4

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