Strain-induced helimagnetism, finite thickness effects, and interlayer coupling in magnetic semiconductor multilayers

T. M. Giebultowicz, H. Luo, Nitin Samarth, J. K. Furdyna, Valerie Nunez, J. J. Rhyne, W. Faschinger, G. Springholtz, G. Bauer, H. Sitter

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Abstract

Neutron diffraction studies of antiferromagnetic semiconductor superlattices are reviewed. Mn-VI/II-VI multilayers (e.g. MnSe/ZnTe, MnSe/ZnSe) exhibit a variety of strain-induced effects in spin ordering and phase transition phenomena. In MnTe/CdTe systems, in which the thickness of the non-magnetic CdTe spacers can be very thin (∼ 6 Å) and comparable with the range of the Mn-Mn exchange interactions, the measurements clearly show the onset of interlayer coupling. Pronounced interlayer coupling has been observed in experiments on another system, EuTe/PbTe, with much thicker (30-40 Å) non-magnetic layers - arguably, this coupling is maintained by dipolar fields.

Original languageEnglish (US)
Pages (from-to)163-168
Number of pages6
JournalPhysica B: Physics of Condensed Matter
Volume198
Issue number1-3
DOIs
StatePublished - Apr 1 1994

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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