Journal of Magnetics

  • 제12권1호
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  • Pages.1-6
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  • 2007
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  • 1226-1750(pISSN)
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  • 2233-6656(eISSN)
한국자기학회 (The Korean Magnetics Society)
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Current-Induced Magnetic Domain-Wall Motion by Spin Transfer Torque: Collective Coordinate Approach with Domain-Wall Width Variation

  • Jung, Soon-Wook (Department of Physics, Pohang University of Science and Technology) ;
  • Lee, Hyun-Woo (Department of Physics, Pohang University of Science and Technology)
  • 발행 : 2007.03.31
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초록

The spin transfer torque generated by a spin-polarized current can induce the shift of the magnetic domain-wall position. In this work, we study theoretically the current-induced domain-wall motion by using the collective coordinate approach [Gen Tatara and Hiroshi Kohno, Phys. Rev. Lett. 92, 86601 (2004)]. The approach is extended to include not only the domain-wall position and the polarization angle changes but also the domain-wall width variation. It is demonstrated that the width variation affects the critical current.

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참고문헌

  1. L. Berger, Phys. Rev. B 54, 9353 (1996)
  2. J. Slonczewski, J. Magn. Magn. Mater. 159, L1 (1996)
  3. L. Berger, J. Appl. Phys. 71, 2721 (1992)
  4. A. Yamaguchi, T. Ono, S. Nasu, K. Miyake, K. Mibu, and T. Shinjo, Phys. Rev. Lett. 92, 77205 (2004)
  5. M. Yamanouch, D. Chiba, F. Matsukura, and H. Ohno, Nature (London) 428, 539 (2004)
  6. E. Saitoh, H. Miyajima, T. Yamaoka, and G. Tatara, Nature (London) 432, 203 (2004) https://doi.org/10.1038/432004a
  7. Z. Li and S. Zhang, Phys. Rev. B 70, 24417 (2004)
  8. G. Tatara and H. Kohno, Phys. Rev. Lett. 92, 86601 (2004)
  9. A. Thiaville, Y. Nakatani, J. Miltat, and Y. Suzuki, Europhys. Lett. 69, 990 (2005)
  10. H.-B. Braun and D. Loss, Phys. Rev. B 53, 3237 (1996)
  11. G. D. Mahan, Many-Particle Physics, Kluwer Academic/Plenum Publishers, New York (2000) pp. 94-100
  12. G. Tatara, Y.-W. Zhao, M. Munoz, and N. Garcia, Phys. Rev. Lett. 83, 2030 (1999)
  13. N. L. Schryer and L. R. Walker, J. Appl. Phys. 45, 5406 (1974) https://doi.org/10.1063/1.1663358
  14. A. Yamaguchi, K. Yano, H. Tanigawa, S. Kasai, and T. Ono, Jpn. J. Appl. Phys. 45, 3850 (2006)
  15. The relation between K, $K_p$ and t, W is provided by Kyung-Jin Lee
  16. S. Zhang and Z. Li, Phys. Rev. Lett. 93, 127204 (2004)

피인용 문헌

  1. Current- and Field-Driven Domain Wall Motion in L- and C-Shaped Permalloy Nanowires With Different Wire Widths vol.44, pp.11, 2008, https://doi.org/10.1109/TMAG.2008.2003057
  2. Dependency of Critical Behaviors on Different Order Parameters for Antiferromagnetic Heisenberg Model on Three-Dimensional Regular Lattice vol.45, pp.6, 2009, https://doi.org/10.1109/TMAG.2009.2018947
  3. Current-Induced Microwave Excitation of a Domain Wall Pinned in a Magnetic Wire with Bi-Axial Anisotropy vol.78, pp.9, 2009, https://doi.org/10.1143/JPSJ.78.093801
  4. Domain wall motion driven by an oscillating magnetic field vol.50, pp.12, 2017, https://doi.org/10.1088/1361-6463/aa5d35