Conductance Modulation in Double Quantum Wells Due to Magnetic Field-Induced Anticrossing

J. A. Simmons, S. K. Lyo, N. E. Harff, and J. F. Klem
Phys. Rev. Lett. 73, 2256 – Published 17 October 1994
PDFExport Citation

Abstract

We observe a strong modulation of the low temperature in-plane conductance G of coupled quantum wells (QW's) by an in-plane magnetic field B and attribute this to an anticrossing of the two QW dispersion curves. The anticrossing produces a partial energy gap, yielding large, B-tunable distortions in the Fermi surface and density of states. Sweeping B moves the energy gap through the Fermi level, with the upper and lower gap edges producing a sharp maximum and minimum in G, in agreement with theoretical calculations. The gap energy is directly determined from the data.

  • Received 16 May 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.2256

©1994 American Physical Society

Authors & Affiliations

J. A. Simmons, S. K. Lyo, N. E. Harff*, and J. F. Klem

  • Sandia National Laboratories, Albuquerque, New Mexico 87185

  • *Also at Oregon State University, Corvallis, OR 97331.

References (Subscription Required)

Click to Expand
Issue

Vol. 73, Iss. 16 — 17 October 1994

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×