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arXiv · 0901.0607

Effects of Quantum Tunneling in Metal Nano-gap on Surface-Enhanced Raman Scattering

Li Mao·Zhipeng Li·Biao Wu·Hongxing Xu
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Abstract

The quantum tunneling effects between two metallic plates are studied using the time dependent density functional theory. Results show that the tunneling is mainly dependent on the separation and the initial local field of the interstice between plates. The smaller separation and larger local field, the easier the electrons tunnels through the interstice. Our numerical calculation shows that when the separation is smaller than 0.6 nm the quantum tunneling dramatically reduce the enhancing ability of interstice between nanoparticles.

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Li Mao, Zhipeng Li, Biao Wu, Hongxing Xu. 2009-04-20. Effects of Quantum Tunneling in Metal Nano-gap on Surface-Enhanced Raman Scattering. https://doi.org/10.1063/1.3155157

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