Magneto-optical study of interwell coupling in double quantum wells using diluted magnetic semiconductors

Sang Hoon Lee, M. Dobrowolska, J. Furdyna, H. Luo

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

Magneto-optical experiments were carried out on a series of ZnSe/(Formula presented)(Formula presented)Se double quantum wells coupled by (Formula presented)(Formula presented)Se diluted magnetic semiconductor (DMS) barriers. The samples consisted of 45-Å nonmagnetic quantum wells with interwell DMS barriers of different thicknesses (10, 35, and 100 Å). The interband ground-state transition, as well as interband transitions between excited states, were observed. As the magnetic field is applied, the heights of the magnetic barriers in the conduction and in the valence band undergo Zeeman shifts, causing major changes in the interwell coupling. Such changes were studied by examining the energies of the transitions, their Zeeman splittings, and their intensities. The dependence of these effects was further studied as a function of temperature and barrier width. The behavior observed in those cases involving ultrathin magnetic barriers was found to be anomalous, and is discussed in terms of effects of reduced dimensionality on the magnetic properties of thin DMS layers.

Original languageEnglish
Pages (from-to)16939-16951
Number of pages13
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume54
Issue number23
DOIs
Publication statusPublished - 1996 Jan 1
Externally publishedYes

Fingerprint

Semiconductor quantum wells
quantum wells
Electron transitions
Valence bands
Excited states
Ground state
Magnetic properties
Magnetic fields
Diluted magnetic semiconductors
Experiments
magnetic properties
valence
conduction
Temperature
ground state
shift
magnetic fields
excitation
temperature
energy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magneto-optical study of interwell coupling in double quantum wells using diluted magnetic semiconductors. / Lee, Sang Hoon; Dobrowolska, M.; Furdyna, J.; Luo, H.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 54, No. 23, 01.01.1996, p. 16939-16951.

Research output: Contribution to journalArticle

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