Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-04-06
Phys. Rev. B 74, 233403 (2006)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 2 eps figures
Scientific paper
10.1103/PhysRevB.74.233403
We investigate theoretically a mechanically assisted Kondo effect and electric charge shuttling in nanoelectromechanical single-electron transistor (NEM-SET). It is shown that the mechanical motion of the central island (a small metallic particle) with the spin results in the time dependent tunneling width which leads to effective increase of the Kondo temperature. The time-dependent oscillating Kondo temperature T_K(t) changes the scaling behavior of the differential conductance resulting in the suppression of transport in a strong coupling- and its enhancement in a weak coupling regimes. The conditions for fine-tuning of the Abrikosov-Suhl resonance and possible experimental realization of the Kondo shuttling are discussed.
Kikoin Konstantin
Kiselev Michael N.
Shekhter Robert I.
Vinokur Valeri M.
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