Quasiballistic electronic interferometer
Bykov A. A. , Kvon Z. D. , Ol'shanetskii E. B. , Litvin L. V. , Nastaushev Yu. V., Mansurov V. G., Migal' V. P. , Moshchenko S. P., Plyukhin V. G.
We have built and investigated an electronic interferometer based on a 2D electron gas in a AlGaAs/GaAs heterojunction. This is the smallest interferometer that has ever been built. We established that at Τ < 0.1 К the amplitude of the Aharonov-Bohm oscillations of the interferometer reaches 35% of the resistance of the interferometer in the absence of a magnetic field; this is almost twice the amplitude previously achieved.