Angular dependence of domain wall resistivity in artificial magnetic domain structures

Aziz, A. and Bending, S. J. and Roberts, H. G. and Crampin, S. and Heard, P. J. and Marrows, C. H. (2006) Angular dependence of domain wall resistivity in artificial magnetic domain structures. Physical review letters, 97 (20). ISSN 0031-9007

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Abstract

We exploit the ability to precisely control the magnetic domain structure of perpendicularly magnetized Pt/Co/Pt trilayers to fabricate artificial domain wall arrays and study their transport properties. The scaling behavior of this model system confirms the intrinsic domain wall origin of the magnetoresistance, and systematic studies using domains patterned at various angles to the current flow are excellently described by an angular-dependent resistivity tensor containing perpendicular and parallel domain wall resistivities. We find that the latter are fully consistent with Levy-Zhang theory, which allows us to estimate the ratio of minority to majority spin carrier resistivities, rho(down arrow)/rho(up arrow)similar to 5.5, in good agreement with thin film band structure calculations.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2006 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
63540
Deposited By:
Deposited On:
19 Apr 2013 10:26
Refereed?:
Yes
Published?:
Published
Last Modified:
31 May 2020 02:02