Anisotropic Magnetoresistance components in (Ga,Mn)As

Abstract

Our experimental and theoretical study of the non-crystalline and crystalline components of the anisotropic magnetoresistance (AMR) in (Ga,Mn)As is aimed at exploring the basic physical aspects of this relativistic transport effect. The non-crystalline AMR reflects anisotropic lifetimes of the holes due to polarized Mn impurities while the crystalline AMR is associated with valence band warping. We find that the sign of the non-crystalline AMR is determined by the form of spin-orbit coupling in the host band and by the relative strengths of the non-magnetic and magnetic contributions to the impurity potential. We develop experimental methods directly yielding the non-crystalline and crystalline AMR components which are then independently analyzed. We report the observation of an AMR dominated by a large uniaxial crystalline component and show that AMR can be modified by local strain relaxation. We discuss generic implications of our experimental and theoretical findings including predictions for non-crystalline AMR sign reversals in dilute moment systems.

4 pages, 3 figures. Phys. Rev. Lett. in press

References in corpus (13)

• Hole-mediated ferromagnetism in tetrahedrally coordinated semiconductors
• Theory of ferromagnetic (III,Mn)V semiconductors
• Anomalous Hall effect in ferromagnetic semiconductors
• Giant Planar Hall Effect in Epitaxial (Ga,Mn)As Devices
• On the character of states near the Fermi level in (Ga,Mn)As: impurity to valence band crossover
• Anisotropic Magnetoresistance in Ga${}_{1-x}$Mn${}_x$As
• DC-transport properties of ferromagnetic (Ga,Mn)As semiconductors
• Anisotropic Magnetoresistance and Magnetic Anisotropy in High-quality (Ga,Mn)As Films
• Angle-dependent magnetotransport in cubic and tetragonal ferromagnets: Application to (001)- and (113)A-oriented (Ga,Mn)As
• Boltzmann theory of engineered anisotropic magnetoresistance in (Ga,Mn)As
• Lithographic engineering of anisotropies in (Ga,Mn)As
• Quantitative Study of Magnetotransport through a (Ga,Mn)As Single Ferromagnetic Domain
• AMR and magnetometry studies of ultra thin GaMnAs films

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