liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Proposed experiments to grow nanoscale p-n junctions and modulation-doped quantum wires and dots
Chalmers University of Technology.
Chalmers University of Technology.ORCID iD: 0000-0001-6235-7038
2002 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 65, no 12Article in journal (Refereed) Published
Abstract [en]

We propose and model several experiments where the field effect defined by split gates is used to restrict acceptors and donors to regions of a semiconductor layer. The nonlinear potential defined by split gates restricts positive donors to the center of the layer, whereas the negative acceptors localize near the edges. The Arrhenius equation modified to include effects of the external and internal fields is used to calculate time- and position-dependent impurity hopping probabilities for Monte Carlo simulations of the experiments. The results show that at high doping levels, the internal field resists high concentrations of net charge, and "flattens" the doping profile. In addition, we perform Monte Carlo simulations, where the split gates move relative to the semiconductor sample, to demonstrate how regions of a semiconductor layer can be cleared of unwanted impurities. Finally, we discuss how a "chessboard" arrangement of square gates can be employed to create modulation-doped quantum dot arrays.

Place, publisher, year, edition, pages
American Physical Society , 2002. Vol. 65, no 12
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-59172DOI: 10.1103/PhysRevB.65.125330ISI: 000174938800078OAI: diva2:350168
Available from: 2010-09-10 Created: 2010-09-09 Last updated: 2014-01-15

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Willander, Magnus
In the same journal
Physical Review B. Condensed Matter and Materials Physics
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 10 hits
ReferencesLink to record
Permanent link

Direct link