Imaging coherent electron flow

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

In this review, results of imaging coherent electron flow through a two-dimensional electron gas (2DEG) are presented. The images show the modal pattern of electron wavefunctions passing through a quantum point contact. At longer distances, unexpected branching of the electron flow is observed due to the small bumps and dips in the potential caused by the donor atoms. Images of the electron flow being bent by an electrostatic prism are also presented. All of the images are decorated by interference fringes spaced by half the Fermi wavelength, which are used to spatially profile the electron density. A technique for imaging the inelastic scattering length in the 2DEG is also demonstrated.

Original languageEnglish (US)
JournalJournal of Physics Condensed Matter
Volume15
Issue number50
DOIs
StatePublished - Dec 24 2003
Externally publishedYes

Fingerprint

Two dimensional electron gas
Imaging techniques
Electrons
electrons
Inelastic scattering
Point contacts
Wave functions
Prisms
prisms
Carrier concentration
electron gas
Electrostatics
inelastic scattering
electrostatics
interference
Wavelength
Atoms
profiles
wavelengths
atoms

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Imaging coherent electron flow. / Leroy, Brian J.

In: Journal of Physics Condensed Matter, Vol. 15, No. 50, 24.12.2003.

Research output: Contribution to journalArticle

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