Phase shifts and phaseπjumps in four-terminal waveguide Aharonov-Bohm interferometers

Kreisbeck, Christoph ; Kramer, Tobias

; Buchholz, Sven S. ; Fischer, Saskia F. ; Kunze, Ulrich

; Reuter, Dirk ; Wieck, Andreas D.

Alternative Links zum Volltext:DOI Verlag

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Zusammenfassung

Quantum coherent properties of electrons can be studied in Aharonov-Bohm (AB) interferometers. We investigate both experimentally and theoretically the transmission phase evolution in a four-terminal quasi-one- dimensional AlGaAs/GaAs-based waveguide AB ring. As main control parameter besides the magnetic field, we tune the Fermi wave number along the pathways using a top-gate. Our experimental ...