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Experimental Observations of Optical Spin Transfer and Spin-Orbit Torques in Magnetic Semiconductors

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Ultrafast Magnetism I

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 159))

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Abstract

The spin transfer and spin-orbit torques can be used for electrically driven magnetization dynamics. Here, we report on the experimental observation of the optical counterparts of these torques which lead to a sub-picosecond tilt of magnetization and, consequently, to the magnetization precession in (Ga,Mn)As.

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References

  1. P. Němec, E. Rozkotová, N. Tesařová, F. Trojánek, E. De Ranieri, K. Olejník, J. Zemen, V. Novák, M. Cukr, P. Malý and T. Jungwirth, “Experimental observation of the optical spin transfer torque” Nature Physics 8, 411 - 415 (2012).

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  3. P. Němec, V. Novák, N. Tesařová, E. Rozkotová, H. Reichlová, D. Butkovičová, F. Trojánek, K. Olejník, P. Malý, R. P. Campion, B. L. Gallagher, J. Sinova, and T. Jungwirth, “Controlling semiconducting and ferromagnetic properties in individually optimized Mn-doped GaAs epilayers” Nature Communications 4, 1422 (2013).

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  4. N. Tesařová, P. Němec, E. Rozkotová, J. Šubrt, H. Reichlová, D. Butkovičová, F. Trojánek, P. Malý, V. Novák, and T. Jungwirth, “Direct measurement of the three-dimensional magnetization vector trajectory in GaMnAs by a magneto-optical pump-and-probe method” Appl. Phys. Lett. 100, 102403 (2012).

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Acknowledgments

We acknowledge support from the Grant Agency of the Czech Republic Grant No. P204/12/0853, from EU ERC Advanced Grant No. 268066 and FP7-215368 SemiSpinNet, from the Ministry of Education of the Czech Republic Grants No. LM2011026, from the Charles University in Prague Grant No. SVV-2012-265306 and 443011, and from the Academy of Sciences of the Czech Republic Preamium Academiae.

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Authors and Affiliations

  1. Faculty of Mathematics and Physics, Charles University in Prague, Ke Karlovu 3, 121 16, Prague 2, Czech Republic

    P. Němec, E. Rozkotová, N. Tesařová, T. Janda, D. Butkovičová, F. Trojánek & P. Malý

  2. Institute of Physics ASCR, v.v.i., Cukrovarnická 10, 162 53, Prague 6, Czech Republic

    V. Novák, J. Zemen, K. Olejník & T. Jungwirth

Authors
  1. P. Němec
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  2. E. Rozkotová
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  3. N. Tesařová
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  4. T. Janda
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  5. D. Butkovičová
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  6. F. Trojánek
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  7. P. Malý
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  8. V. Novák
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  9. J. Zemen
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  10. K. Olejník
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  11. T. Jungwirth
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Corresponding author

Correspondence to P. Němec .

Editor information

Editors and Affiliations

  1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg and CNRS, Strasbourg, France

    Jean-Yves Bigot

  2. Department of Physics, University of Kaiserslautern, Kaiserslautern, Germany

    Wolfgang Hübner

  3. Institute for Molecules and Materials (IMM), Radboud University, Nijmegen, The Netherlands

    Theo Rasing

  4. Physics Department, The University of York, York, United Kingdom

    Roy Chantrell

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© 2015 Springer International Publishing Switzerland

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Němec, P. et al. (2015). Experimental Observations of Optical Spin Transfer and Spin-Orbit Torques in Magnetic Semiconductors. In: Bigot, JY., Hübner, W., Rasing, T., Chantrell, R. (eds) Ultrafast Magnetism I. Springer Proceedings in Physics, vol 159. Springer, Cham. https://doi.org/10.1007/978-3-319-07743-7_6

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