Observation of quantum wire formation at intersecting quantum wells

A. R. Goñi, L. N. Pfeiffer, K. W. West, A. Pinczuk, H. U. Baranger, H. L. Stormer

Research output: Contribution to journalArticlepeer-review

117 Scopus citations

Abstract

We report the first observation of a quantum bound state formed at the junction of two intersecting quantum wells in the shape of a T. The atomically precise T junctions are fabricated by a novel cleaved edge overgrowth process in the AlGaAs/GaAs system. The identification of bound states with energies in excess of 20 meV is made by optical emission and absorption spectroscopy. Such quantum wire states are caused by the unique confinement of the lowest state wave function to the region of the T junction.

Original languageEnglish (US)
Pages (from-to)1956-1958
Number of pages3
JournalApplied Physics Letters
Volume61
Issue number16
DOIs
StatePublished - 1992
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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