Sapozhnikov, M. V. Fraerman, A. A. Vdovichev, S. N. Gribkov, B. A. Gusev, S. A. Klimov, A. Yu. Rogov, V. V. Chang, Joonyeon Kim, Hyungjun Koo, Hyun Cheol Han, Suk-Hee Chun, S. H. 2024-01-21T00:34:09Z 2024-01-21T00:34:09Z 2021-09-02 2007-08-06 0003-6951 https://pubs.kist.re.kr/handle/201004/134204 A chain of Co nanoparticles was formed along a GaMnAs microbridge by electron beam lithography. The magnetic state of the particles was manipulated by a magnetic force microscope probe. It was found that resistance of the microbridge depended on the state of the particles and was different for the particles in the single-domain and vortex states. The resistance exhibited steplike behavior in an external magnetic field. This behavior was the result of the effect of the inhomogeneous stray fields of the particles on the microbridge resistance. The observed phenomenon can be used as an alternative way to control GaMnAs transport properties. (c) 2007 American Institute of Physics. English AMER INST PHYSICS Effect of ferromagnetic nanoparticles on the transport properties of a GaMnAs microbridge Article 10.1063/1.2768304 1 APPLIED PHYSICS LETTERS, v.91, no.6 APPLIED PHYSICS LETTERS 91 6 scie scopus 000248661400086 2-s2.0-34547842584 Physics, Applied Physics Article GaMnAs ferromagnetic nanoparticle single domain vortex AMR