2D-1D coupling in cleaved edge overgrowth

R. De Picciotto, H. L. Stormer, A. Yacoby, L. N. Pfeiffer, K. W. Baldwin, K. W. West

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


The scattering properties of the interface between a one-dimensional (1D) wire and a two-dimensional (2D) electron gas were studied. Experiments were conducted on the cleaved edge of a high quality GaAs/AlGaAs quantum well. The creation of variable length 2D-1D coupling sections is allowed in such type of structures. Ballastic 1D electron transport through these regions with a mean free path of 6 μm was found. The results showed that the origin of quantized conductance was electron scattering across the 2D-1D interface at the contacts. Traditional evaporated metal contacts to one-dimensional molecules which were conjectured to inject and remove electrons can be subjected to similar mechanisms.

Original languageEnglish (US)
Pages (from-to)1730-1733
Number of pages4
JournalPhysical review letters
Issue number8
StatePublished - Aug 21 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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