Effect of two-dimensional parity symmetry breaking in Aharonov-Bohm interference phenomena. Issue 174 (1st September 2016)

• Record Type: Journal Article
• Authors: Xie, Yuantao; Heremans, J. J.; Santos, M. B.
• Is Part Of: Integrated ferroelectrics. Issue 174(2016)
• Page Start: 8
• Page End: 14
• Publication Date: 2016-09-01
• Subjects: Aharonov-Bohm phase -- parity symmetry -- quantum coherence -- mesoscopic physics -- InGaAs -- interferometer; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2016.1189762
• Languages: English
• ISSNs: 1058-4587

Abstract

ABSTRACT: The quantum-mechanical dephasing effect of a two-dimensional parity symmetry breaking is demonstrated in a solid-state quantum-coherent mesoscopic ring interferometer. The interferometer, fabricated on an InGaAs/InAlAs heterostructure, shows Aharonov-Bohm oscillations under magnetic fields at low temperatures. Under asymmetric bias voltage on side-gates, a weakening of the Aharonov-Bohm oscillations is observed. The weakening corresponds to an effective dephasing under two-dimensional parity symmetry breaking by the applied electric field, and is interpreted as a counterpart to the weakening observed under time-reversal symmetry breaking by a magnetic field.