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arXiv · 0706.2263

Phase rigidity breaking in open Aharonov-Bohm ring coupled to a cantilever

F. Romeo·R. Citro·M. Marinaro
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Abstract

The conductance and the transmittance phase shifts of a two-terminal Aharonov-Bohm (AB) ring are analyzed in the presence of mechanical displacements due to coupling to an external can- tilever. We show that phase rigidity is broken, even in the linear response regime, by means of inelastic scattering due to phonons. Our device provides a way of observing continuous variation of the transmission phase through a two-terminal nano-electro-mechanical system (NEMS). We also propose measurements of phase shifts as a way to determine the strength of the electron-phonon coupling in NEMS.

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F. Romeo, R. Citro, M. Marinaro. 2007-06-15. Phase rigidity breaking in open Aharonov-Bohm ring coupled to a cantilever. https://doi.org/10.1103/physrevb.76.081301

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