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Efficient spin transfer torque in La2/3Sr1/3MnO3 nanostructures

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2014

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Foerster, Michael
Peña, Luis
Vaz, Carlos A. F.
Finizio, Simone
Schulz, Tomek
Bisig, André
Büttner, Felix
Eisebitt, Stefan
Méchin, Laurence
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https://doi.org/10.1063/1.4865415
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Applied Physics Letters. 2014, 104(7), 072410. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4865415

Zusammenfassung

We carry out low temperature magnetotransport measurements on nanostructured La2/3Sr1/3MnO3 wires to study the interaction between spin-polarized current and magnetization in this half metallic material. We selectively position domain walls by applying external fields. The domain wall resistance is found to be positive, in contrast to conventional 3d metals. The depinning field is reduced when current pulses are injected into the wire. By comparing measurements for both current polarities, we can disentangle heating and spin transfer torque effects. The determined spin transfer torque efficiency is of the order of 4 × 10−14 Tm2/A, which is significantly higher than in permalloy.

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530 Physik

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Domain walls, Current density, Torque, Electric measurements, Spin polarized transport

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ISO 690FOERSTER, Michael, Luis PEÑA, Carlos A. F. VAZ, Jan HEINEN, Simone FINIZIO, Tomek SCHULZ, André BISIG, Felix BÜTTNER, Stefan EISEBITT, Laurence MÉCHIN, Sebastian HÜHN, Vasily MOSHNYAGA, Mathias KLÄUI, 2014. Efficient spin transfer torque in La2/3Sr1/3MnO3 nanostructures. In: Applied Physics Letters. 2014, 104(7), 072410. ISSN 0003-6951. eISSN 1077-3118. Available under: doi: 10.1063/1.4865415
BibTex
@article{Foerster2014Effic-30484,
  year={2014},
  doi={10.1063/1.4865415},
  title={Efficient spin transfer torque in La<sub>2/3</sub>Sr<sub>1/3</sub>MnO<sub>3</sub> nanostructures},
  number={7},
  volume={104},
  issn={0003-6951},
  journal={Applied Physics Letters},
  author={Foerster, Michael and Peña, Luis and Vaz, Carlos A. F. and Heinen, Jan and Finizio, Simone and Schulz, Tomek and Bisig, André and Büttner, Felix and Eisebitt, Stefan and Méchin, Laurence and Hühn, Sebastian and Moshnyaga, Vasily and Kläui, Mathias},
  note={Article Number: 072410}
}
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