Optical signatures from magnetic two-dimensional electron gases in magnetic fields to 60 T

S. A. Crooker, D. G. Rickel, I. P. Smorchkova, N. Samarth, J. M. Kikkawa, D. D. Awschalom

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

We present experiments in the 60 T long-pulse magnet at the Los Alamos National High Magnetic Field Lab focusing on the high-field, low temperature photoluminescence (PL) from modulation-doped ZnSe/Zn(Cd,Mn)Se single quantum wells. High-speed charge-coupled array detectors and the long (2 s) duration of the magnet pulse permit continuous acquisition of optical spectra throughout a single magnet shot. High-field PL studies of the magnetic two-dimensional electron gases at temperatures down to 350 mK reveal clear intensity oscillations corresponding to integer quantum Hall filling factors, from which we determine the density of the electron gas. At very high magnetic fields, steps in the PL energy are observed which correspond to the partial unlocking of antiferromagnetically bound pairs of Mn2+ spins.

Original languageEnglish (US)
Pages (from-to)5932-5934
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II B
DOIs
StatePublished - Apr 15 1999
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, United States
Duration: Nov 9 1998Nov 12 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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