Landolt-Börnstein - Group III Condensed Matter

10.8 Electrostatic Aharonov-Bohm effect

Abstract

This chapter discusses electrostatic Aharonov–Bohm effect (AB) effect. An electric field may cause a phase shift in probability amplitudes, Δρj = (e/h) ∫V (t)dt, where V is the scalar potential an electron is subject to on its path and the integral is taken over the period of time the electron spends in contact with V. Resulting periodic oscillations in the transmission probability of the ring as a function of V are known as the electrostatic AB effect. A phase shift of the AB oscillations occurred when the gate voltage was changed from 0 to -300mV, which is illustrated in a figure, and the influence of larger variations of Vg on the AB effect is shown. As no periodic structure in the resistance as a function of Vgwas found, the phase shifts were attributed to a shift in the Feynman trajectories.

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Title
10.8 Electrostatic Aharonov-Bohm effect
Book Title
Electronic Transport. Part 1: Quantum Point Contacts and Quantum Wires
In
10 Connected rings
Book DOI
10.1007/b55682
Chapter DOI
10.1007/10479560_65
Part of
Landolt-Börnstein - Group III Condensed Matter
Volume
34B1
Editors
  • B. Kramer
  • Authors
  • A. Fechner
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