High‐quality one‐dimensional electron wave guides were fabricated by atomic‐force microscope lithography from a AlGaAs/GaAs 30 nm wide quantum well with two occupied subband. In the case of strong coupling the quantized conductance at 4.2 K shows missing or ill‐defined steps with otherwise regular increase in multiples of 2e2/h which are caused by coincidence of 1D subbands of different vertical modes. Magnetotransport in transverse fields show nearly regular patterns of level crossings and anticrossings.
Skip Nav Destination
Research Article| June 30 2005
Magnetotransport spectroscopy of mode coupling in electron wave guides
S. F. Fischer;
AIP Conf. Proc. 772, 923–924 (2005)
G. Apetrii, S. F. Fischer, U. Kunze, D. Schuh, G. Abstreiter; Magnetotransport spectroscopy of mode coupling in electron wave guides. AIP Conf. Proc. 30 June 2005; 772 (1): 923–924. https://doi.org/10.1063/1.1994409
Download citation file: