Evidence of Skyrmion Excitations about ν=1 in n-Modulation-Doped Single Quantum Wells by Interband Optical Transmission

E. H. Aifer, B. B. Goldberg, and D. A. Broido
Phys. Rev. Lett. 76, 680 – Published 22 January 1996
PDFExport Citation

Abstract

A dramatic reduction in the spin polarization of a two-dimensional electron gas in a magnetic field is observed when the Fermi energy moves off the midpoint of the spin gap of the lowest Landau level, ν=1. The spin polarization is measured by magnetoabsorption spectroscopy which distinguishes the occupancy of the two electron spin states. The rapid decay of spin alignment over small changes to both higher and lower magnetic field provides experimental evidence for the presence of Skyrmion excitations where exchange energy dominates Zeeman energy in the quantum Hall regime at ν=1.

  • Received 18 July 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.680

©1996 American Physical Society

Authors & Affiliations

E. H. Aifer and B. B. Goldberg

  • Department of Physics, Boston University, Boston, Massachusetts 02215

D. A. Broido

  • Physics Department, Boston College, Chestnut Hill, Massachusetts 02167

References (Subscription Required)

Click to Expand
Issue

Vol. 76, Iss. 4 — 22 January 1996

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
×