Kondo effect in organometallic complexes with vibrating ligand shells
详细信息 查看全文
- 作者：M.N. Kiselev ; K. Kikoin ; M.R. Wegewijs
- 关键词：Kondo effect ; Molecular transistor ; Singlet/triplet transition
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2007
- 出版时间：March 2007
- 年：2007
- 卷：310
- 期：2
- 页码：2414-2416
- 全文大小：115 K
文摘
We investigate transport through a mononuclear rare-earth metal-organic shell complex with strong tunnel coupling between the shell and two electrodes. The ground state of this molecule is a singlet while the first excited state is a triplet. We show that modulation of the tunnel barrier due to a molecular distortion which couples to the tunneling induces the Kondo effect, provided the discrete vibrational energy compensates the singlet/triplet gap. We discuss also the possibility of tuning the phonon-induced Kondo tunneling by external magnetic field and the finite bias Kondo anomaly.