2008/02/29 by L. V. Litvin, A. Helzel, H. -P. Tranitz +4 · 2 citations
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Mechanical and Optical Resonators #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevb.78.075303
published as Phys. Rev. B v.78, p.075303, (2008). · 5 pages, 5 figures, final version accepted for publication in Phys. Rev. B
arxiv created 2008/07/18 · openalex publication_date 2008/08/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We study the visibility of Aharonov-Bohm interference in an electronic Mach-Zehnder interferometer in the integer quantum Hall regime. The visibility is controlled by the filling factor \ensuremathν and is observed only between \ensuremathν\ensuremath≈2.0 and 1.0, with an unexpected maximum near \ensuremathν=1.5. Three energy scales extracted from the temperature and voltage dependences of the visibility change in a very similar way with the filling factor, indicating that the different aspects of the interference depend sensitively on the local structure of the compressible and incompressible strips forming the quantum Hall edge channels.