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In-plane tunneling anisotropic magnetoresistance in (Ga,Mn)As/GaAs Esaki diodes in the regime of the ecxess current

Shiogai, Junichi, Ciorga, Mariusz, Utz, Martin, Schuh, Dieter, Kohda, Makoto, Bougeard, Dominique, Nojima, Tsutomu, Weiss, Dieter and Nitta, Junsaku (2015) In-plane tunneling anisotropic magnetoresistance in (Ga,Mn)As/GaAs Esaki diodes in the regime of the ecxess current. Applied Physics Letters 106 (26), pp. 262402-1.

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Abstract

We investigate the angular dependence of the tunneling anisotropic magnetoresistance in (Ga,Mn)As/n-GaAs spin Esaki diodes in the regime where the tunneling process is dominated by the excess current through midgap states in (Ga,Mn)As. We compare it to similar measurements performed in the regime of band-to-band tunneling. Whereas the latter show biaxial symmetry typical for magnetic anisotropy observed in (Ga,Mn)As samples, the former is dominated by uniaxial anisotropy along the 〈110〉 axes.


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Item type:Article
Date:29 June 2015
Institutions:Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Dominique Bougeard
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Projects:SFB 689: Spinphänomene in reduzierten Dimensionen
Identification Number:
ValueType
10.1063/1.4923309DOI
Keywords:Tunneling, Anisotropy, Magnetic anisotropy, Tunneling diodes, Electric measurements
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:32025
Owner only: item control page

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