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Oh, Yoon Seok
Laboratory for Strong Correlation in Quantum Materials
Research Interests
  • Multiferroic
  • Ferroelectric
  • Quantum Magnetism

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Non-monotonic dependence of the anomalous Hall coefficient scaling parameter in annealed Ga1− xMnxAs epifilms

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Title
Non-monotonic dependence of the anomalous Hall coefficient scaling parameter in annealed Ga1− xMnxAs epifilms
Author
Choi, HKLee, WOOh, Yoon SeokKim, KHPark, YD
Keywords
Anomalous Hall coefficient; Anomalous Hall effect; Diluted magnetic semiconductors; Ga1-xMnxAs; Scaling parameter
Issue Date
2007-03
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.310, no.2, pp.2129 - 2131
Abstract
When plotting the anomalous Hall coefficient (Rs) and longitudinal resistivty (ρxx) for a series of annealed Ga1-xMnxAs epilayers (x≈0.055), we find the value of the scaling parameter n, from RS=cρxx n, to range from one, as-grown, to two at an optimal annealing temperature to values greater than three for higher annealing temperatures, similar behavior to certain inhomogeneous systems. This scaling relationship can be a new method to detect secondary phases in ferromagnetic semiconductor systems. © 2006 Elsevier B.V. All rights reserved.
URI
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DOI
10.1016/j.jmmm.2006.10.935
ISSN
0304-8853
Appears in Collections:
PHY_Journal Papers
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