Pure spin current devices based on ferromagnetic topological insulators

Götte M, Joppe M, Dahm T (2016)
SCIENTIFIC REPORTS 6: 36070.

Zeitschriftenaufsatz | Veröffentlicht| Englisch
 
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Abstract / Bemerkung
Two-dimensional topological insulators possess two counter propagating edge channels with opposite spin direction. Recent experimental progress allowed to create ferromagnetic topological insulators realizing a quantum anomalous Hall (QAH) state. In the QAH state one of the two edge channels disappears due to the strong ferromagnetic exchange field. We investigate heterostructures of topological insulators and ferromagnetic topological insulators by means of numerical transport calculations. We show that spin current flow in such heterostructures can be controlled with high fidelity. Specifically, we propose spintronic devices that are capable of creating, switching and detecting pure spin currents using the same technology. In these devices electrical currents are directly converted into spin currents, allowing a high conversion efficiency. Energy independent transport properties in combination with large bulk gaps in some topological insulator materials may allow operation even at room temperature.
Erscheinungsjahr
2016
Zeitschriftentitel
SCIENTIFIC REPORTS
Band
6
Art.-Nr.
36070
ISSN
2045-2322
Finanzierungs-Informationen
Article Processing Charge funded by the Deutsche Forschungsgemeinschaft and the Open Access Publication Fund of Bielefeld University.
Page URI
https://pub.uni-bielefeld.de/record/2907030

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Götte M, Joppe M, Dahm T. Pure spin current devices based on ferromagnetic topological insulators. SCIENTIFIC REPORTS. 2016;6: 36070.
Götte, M., Joppe, M., & Dahm, T. (2016). Pure spin current devices based on ferromagnetic topological insulators. SCIENTIFIC REPORTS, 6, 36070. doi:10.1038/srep36070
Götte, M., Joppe, M., and Dahm, T. (2016). Pure spin current devices based on ferromagnetic topological insulators. SCIENTIFIC REPORTS 6:36070.
Götte, M., Joppe, M., & Dahm, T., 2016. Pure spin current devices based on ferromagnetic topological insulators. SCIENTIFIC REPORTS, 6: 36070.
M. Götte, M. Joppe, and T. Dahm, “Pure spin current devices based on ferromagnetic topological insulators”, SCIENTIFIC REPORTS, vol. 6, 2016, : 36070.
Götte, M., Joppe, M., Dahm, T.: Pure spin current devices based on ferromagnetic topological insulators. SCIENTIFIC REPORTS. 6, : 36070 (2016).
Götte, Matthias, Joppe, Michael, and Dahm, Thomas. “Pure spin current devices based on ferromagnetic topological insulators”. SCIENTIFIC REPORTS 6 (2016): 36070.
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