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Memory Behavior of the Planar Hall Effect in Ferromagnetic (Ga, Mn)As/GaAs Superlattices

Författare:
Publiceringsår: 2010
Språk: Engelska
Sidor: 83-86
Publikation/Tidskrift/Serie: Journal of Superconductivity and Novel Magnetism
Volym: 23
Nummer: 1
Dokumenttyp: Konferensbidrag
Förlag: Springer New York

Sammanfattning

The planar Hall effect (PHE) has been studied in short period (Ga, Mn)As/GaAs superlattices displaying a ferromagnetic interlayer coupling between the magnetic layers. Complex dependence of the PHE on applied magnetic field is explained by taking into account the magnetocrystalline anisotropy of the (Ga, Mn)As layers, which results from biaxial compressive strain in the layers epitaxially grown on GaAs. Two-state behavior of the planar Hall resistance at zero magnetic field provides its usefulness for applications in nonvolatile memory devices. In addition, using an appropriate sequence of applied magnetic fields four different states of the planar Hall resistance, suitable for quaternary memory devices, can be realized owing to the formation of a stable multidomain structure in the Hall bar.

Disputation

Nyckelord

  • Physics and Astronomy
  • Planar Hall effect
  • Ferromagnetic semiconductors
  • Superlattices
  • devices
  • Memory

Övriga

5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors
2014-08-04
Foz do Iguacu, Brazil
Published
Yes
  • ISSN: 1557-1939

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