Tunneling magnetoresistance from non-collinear alignment of magnetization in Fe/GaAlAs/GaMnAs magnetic tunnel junctions

Taehee Yoo; Sungwon Khym; Hakjoon Lee; Sangyeop Lee; Sang Hoon Lee; Xinyu Liu; Jacek K. Furdyna; Dong Uk Lee; Eun Kyu Kim

doi:10.1063/1.4807846

Tunneling magnetoresistance from non-collinear alignment of magnetization in Fe/GaAlAs/GaMnAs magnetic tunnel junctions

Taehee Yoo, Sungwon Khym, Hakjoon Lee, Sangyeop Lee, Sang Hoon Lee, Xinyu Liu, Jacek K. Furdyna, Dong Uk Lee, Eun Kyu Kim

Department of Physics

Research output: Contribution to journal › Article

12 Citations (Scopus)

Abstract

Tunneling magnetoresistance (TMR) observed in Fe/GaAlAs/GaMnAs magnetic tunnel junctions depends strongly on relative configuration of magnetizations in the GaMnAs and Fe layers. Using a series of field orientations, we show that non-collinear alignments of magnetization in this structure occur when the magnetic field is applied away from the easy axes of the magnetic layers; and we find that the values of TMR observed for non-collinear spin configurations are very different from those of collinear configurations. The observed behavior suggests the possibility of using this effect for multivalued magnetic memory devices.

Original language	English
Article number	212404
Journal	Applied Physics Letters
Volume	102
Issue number	21
DOIs	https://doi.org/10.1063/1.4807846
Publication status	Published - 2013 Jun 24

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ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Cite this

Yoo, T., Khym, S., Lee, H., Lee, S., Lee, S. H., Liu, X., ... Kyu Kim, E. (2013). Tunneling magnetoresistance from non-collinear alignment of magnetization in Fe/GaAlAs/GaMnAs magnetic tunnel junctions. Applied Physics Letters, 102(21), [212404]. https://doi.org/10.1063/1.4807846

Tunneling magnetoresistance from non-collinear alignment of magnetization in Fe/GaAlAs/GaMnAs magnetic tunnel junctions. / Yoo, Taehee; Khym, Sungwon; Lee, Hakjoon; Lee, Sangyeop; Lee, Sang Hoon; Liu, Xinyu; Furdyna, Jacek K.; Lee, Dong Uk; Kyu Kim, Eun.

In: Applied Physics Letters, Vol. 102, No. 21, 212404, 24.06.2013.

Research output: Contribution to journal › Article

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10.1063/1.4807846