Parallel magnetic-field-induced conductance fluctuations in one- and two-subband ballistic quantum dots.
(2003) Physical Review B, Condensed matter and materials physics — Vol. 68, n° 24, p. 241305 (2003)
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- Abstract
- We report on conductance fluctuations of ballistic quantum dots in a strictly parallel magnetic field B. The quantum dots are patterned in two-dimensional electron gases (2DEG's), confined to 15- and 45-nm-thick GaAs quantum wells (QW) with one and two occupied subbands at B=0, respectively. For both dots we observe universal conductance fluctuations (UCF's) and, in the case of the wide QW dot, a reduction in their amplitude at large B. Our data suggest that the finite thickness of the 2DEG and the orbital effect are responsible for the parallel B-induced UCF's.
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Citations
Gustin, C., Faniel, S., Hackens, B., Melinte, S., Shayegan, M., & Bayot, V. (2003). Parallel magnetic-field-induced conductance fluctuations in one- and two-subband ballistic quantum dots. Physical Review B, Condensed matter and materials physics, 68(24), 241305. https://doi.org/10.1103/PhysRevB.68.241305 (Original work published 2003)