Journal
PHYSICAL REVIEW B
Volume 78, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.075309
Keywords
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Funding
- Korea Science and Engineering Foundation (KOSEF)
- Korean government (MEST) [R01-2008-000-10057-0]
- Seoul RDB Program
- Korea Research Foundation [KRF-2004-005-C00068]
- National Science Foundation [DMR06-03762]
- National Research Foundation of Korea [R01-2008-000-10057-0, 2004-005-C00068] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The distribution of magnetic domain pinning fields was determined in ferromagnetic GaMnAs films using the angular dependence of the planar Hall effect. A major difference is found between the pinning field distribution in as-grown and in annealed films: the former showing a strikingly narrower distribution than the latter. This effect, which we ascribe to differences in the degree of uniformity of magnetic anisotropy, provides a better understanding of magnetic domain landscape in GaMnAs, a subject of current intense interest.
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