Shiogai, Junichi and Schuh, Dieter and Wegscheider, Werner and Kohda, M. and Nitta, J. and Weiss, Dieter (2011) Magnitude and sign control of lithography-induced uniaxial anisotropy in ultra-thin (Ga,Mn)As wires. Applied Physics Letters 98, p. 83101.
We were able to control the magnitude and sign of the uniaxial anisotropy in 5-nm-thin (Ga,Mn)As wires by changing the crystallographic direction of the lithography-induced strain relaxation. The 1-μm-wide (Ga,Mn)As wires, oriented in  and [1math0] directions, were fabricated using electron beam lithography. Their magnetic anisotropies were studied by a coherent rotation method at temperatures between 4.5 and 75 K. Depending on the orientation of the wire, the additional uniaxial anisotropy observed along the axis of the 1-μm-wide samples either increased or decreased the total uniaxial anisotropy.
|Date:||22 February 2011|
|Institutions:|| Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss|
Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber
Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider
|Projects:||SFB 689: Spinphänomene in reduzierten Dimensionen|
|Keywords:||electron beam lithography, ferromagnetic materials, gallium arsenide, III-V semiconductors, magnetic anisotropy, magnetic semiconductors, manganese compounds, wires|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||24 Feb 2011 14:26|
|Last Modified:||21 Jul 2011 02:08|