PL EN


Preferences help
enabled [disable] Abstract
Number of results
1992 | 82 | 5 | 737-740
Article title

Theory of Magnetotunnelling through Donors in the Quantum Well of Double-Barrier Resonant-Tunnelling Structures

Content
Title variants
Languages of publication
EN
Abstracts
EN
The tunnel current from a two-dimensional electron gas (2DEG) into donor impurities in the quantum well of a double-barrier heterostructure is studied using the Bardeen Transfer-Hamiltonian formalism. Resonant tunnelling occurs when the donor level lies within the energy range of occupied 2DEG states. It is shown that in the presence of a magnetic field B normal to the current flow, the magnetocurrent J(B) is determined by the Fourier probability density of the donor wave function corresponding to the momentum p0 transferred to the tunnelling electrons by the Lorentz force. Then experimental J(B) curves, in principle, directly measure the donor wave function. The magnetocurrent is quenched when p0 greatly exceeds the width of the distribution of momentum Fourier components of the donor wave function.
Keywords
EN
Publisher

Year
Volume
82
Issue
5
Pages
737-740
Physical description
Dates
published
1992-11
Contributors
author
  • Department of Physics, University of Nottingham, Nottingham, NG7 2RD, U.K.
author
  • Department of Physics, University of Nottingham, Nottingham, NG7 2RD, U.K.
author
  • Department of Physics, University of Nottingham, Nottingham, NG7 2RD, U.K.
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv82z504kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.