Effect of surface bond-order loss on the dc conductance of a metallic nanosolid

With the miniaturization of a solid device, quantum and interface effects become dominant not only in the static properties but also in the transport dynamics in the solid. Here we examine the dc conductance of a nanosolid by introducing the depression of the intra-atomic trapping potential in the s...

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Published in:Journal of applied physics 2005-11, Vol.98 (10)
Main Authors: Yeung, T. C. Au, Sun, Chang Q., Chiam, T. C., Ramanathan, R., Shangguan, W. Z., Kam, C. H.
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Language:English
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container_title Journal of applied physics
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creator Yeung, T. C. Au
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description With the miniaturization of a solid device, quantum and interface effects become dominant not only in the static properties but also in the transport dynamics in the solid. Here we examine the dc conductance of a nanosolid by introducing the depression of the intra-atomic trapping potential in the surface skin [Sun, Phys. Rev. B 69, 045105 (2004)] as a perturbation to the conventional “quantum well” for tunneling electrons. It is derived that downshifts of the dc conductance peaks (that is, the incident energies for resonant tunneling) happens in an oscillatory way, depending on the strength of the perturbation. Besides, the downshifts of the peak positions due to the trapping potential well depression decrease as the size of the nanosolid is increased.
doi_str_mv 10.1063/1.2136419
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title Effect of surface bond-order loss on the dc conductance of a metallic nanosolid
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