Low temperature magnetoresistance in corrugation gated wires

Low-temperature magnetotransport in ballistic quantum dots and wires

“…At temperatures of the order of 1 K and below reproducible and highly regular oscillations are observed in the MR of the dot as shown in figure 1. As we discuss below, in the region near zero magnetic field for both types of dots, we observe a sharp peak of the MR thought to be due to ballistic weak localization (WL) [7][8][9] increases, reducing the number of modes in the QPC [10,11]. A preliminary analysis of the periodic oscillations at V p = −0.50 V has been given previously [10], where it was shown that a 70 T −1 component was prominently observed in the FFT analysis for both the experiment and a theoretical simulation.…”