Experimental studies of T--shaped quantum dot transistors: phase-coherent electron transport

摘要

We have measured the low-temperature transport properties of a T-shapedquantum dot. Replicated oscillations superimposed on one-dimensionalconductance steps are observed. These structures are consistent with electronphase-coherent length resonance effects in the ballistic regime. Using a simplemodel, we suggest that both one-dimensional and two-dimensionalelectron-electron scattering gives rise to electron phase-breaking in oursystem.