Stefan Blügel: Difference between revisions
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==Affiliations== | ==Affiliations== | ||
*Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany | |||
==Title== | ==Title== | ||
Chiral magnetic skyrmions in ultrathin films and heterostructures: Insights from materials-specific theory | Chiral magnetic skyrmions in ultrathin films and heterostructures: Insights from materials-specific theory | ||
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==References== | ==References== | ||
[1] M. Bode et al., Nature 447, 190 (2007). | *[1] M. Bode et al., Nature 447, 190 (2007). | ||
[2] S. Heinze et al., Nature Physics 7, 713 (2011). | *[2] S. Heinze et al., Nature Physics 7, 713 (2011). | ||
[3] M. Heide et al., Phys. Rev. B. 78, 140403(R) (2008). | *[3] M. Heide et al., Phys. Rev. B. 78, 140403(R) (2008). | ||
[4] N. Romming et al., Science 341, 636 (2013). | *[4] N. Romming et al., Science 341, 636 (2013). | ||
[5] J. Gayles et al., Phys. Rev. Lett. 91, 245123 (2015). | *[5] J. Gayles et al., Phys. Rev. Lett. 91, 245123 (2015). | ||
[6] V. Kashid et al., Phys. Rev. B. 90, 054412 (2014). | *[6] V. Kashid et al., Phys. Rev. B. 90, 054412 (2014). | ||
[ | *[7] F. N. Rybakov et al., Phys. Rev. Lett. accepted, arXiv:1508.04786 | ||
Latest revision as of 17:47, 6 September 2015
Affiliations
- Peter Grünberg Institut and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
Title
Chiral magnetic skyrmions in ultrathin films and heterostructures: Insights from materials-specific theory
Abstract
"Ultrathin magnetic films and heterostructures provide a fantastic playground for the stabilization, manipulation and usage of magnetic skyrmions – topological magnetization solitons – magnetic entities described by a micromagnetic energy functional with particle like properties that may open a new vista for spintronics. A crucial quantity for the chiral skyrmion formation is the Dzyaloshinskii-Moriya interaction (DMI), whose presence in thin films could be established in a concerted effort of first-principles theory and spin-polarized scanning tunnelling microscopy [1]. It could be shown that the spin-orbit interaction and the structure inversion-asymmetry in these systems result in a DMI that is strong enough to give rise to one-dimensional and two-dimensional lattices [2] of chiral spin-textures as well as chiral domain walls [3]. Even single skyrmions [4] could be induced. In retrospect, it is surprising how little is known about the DMI in these metallic systems. In this talk I give some insight into the DMI, relating first-principles calculations of the DMI in thin films and MnFeGe alloys [5] to different models [6] and discuss possibilities to tailor the magnetic interactions to enlarge the materials base to stabilize single skyrmions in films and heterostructures. The chiral bobber [6] is introduced an interesting three-dimensional hybrid particle consisting of skyrmion and a monopole.
References
- [1] M. Bode et al., Nature 447, 190 (2007).
- [2] S. Heinze et al., Nature Physics 7, 713 (2011).
- [3] M. Heide et al., Phys. Rev. B. 78, 140403(R) (2008).
- [4] N. Romming et al., Science 341, 636 (2013).
- [5] J. Gayles et al., Phys. Rev. Lett. 91, 245123 (2015).
- [6] V. Kashid et al., Phys. Rev. B. 90, 054412 (2014).
- [7] F. N. Rybakov et al., Phys. Rev. Lett. accepted, arXiv:1508.04786
