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Experimental observation of an enhanced anisotropic magnetoresistance in non-local configuration

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2011

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Rüffer, Daniel
Czeschka, Franz D.
Gross, Rudolf

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https://doi.org/10.1063/1.3640487
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http://arxiv.org/abs/1108.2125

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Applied Physics Letters. American Institute of Physics (AIP). 2011, 99(14), 142112. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.3640487

Zusammenfassung

We compare non-local magnetoresistance measurements in multi-terminal Ni nanostructures with corresponding local experiments. In both configurations, the measured voltages show the characteristic features of anisotropic magnetoresistance (AMR). However, the magnitude of the non-local AMR signal is up to one order of magnitude larger than its local counterpart. Moreover, the non-local AMR increases with increasing degree of non-locality, i.e., with the separation between the region of the main current flow and the voltage measurement region. All experimental observations can be consistently modeled in terms of current spreading in a non-isotropic conductor. Our results show that current spreading can significantly enhance the magnetoresistance signal in non-local experiments.

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ISO 690RÜFFER, Daniel, Franz D. CZESCHKA, Rudolf GROSS, Sebastian T. B. GOENNENWEIN, 2011. Experimental observation of an enhanced anisotropic magnetoresistance in non-local configuration. In: Applied Physics Letters. American Institute of Physics (AIP). 2011, 99(14), 142112. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.3640487
BibTex
@article{Ruffer2011-08-10T08:44:06ZExper-52540,
  year={2011},
  doi={10.1063/1.3640487},
  title={Experimental observation of an enhanced anisotropic magnetoresistance in non-local configuration},
  number={14},
  volume={99},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Rüffer, Daniel and Czeschka, Franz D. and Gross, Rudolf and Goennenwein, Sebastian T. B.},
  note={Article Number: 142112}
}
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