Resistive contribution in electrical-switching experiments with antiferromagnets

Matalla-Wagner T, Schmalhorst J-M, Reiss G, Tamura N, Meinert M (2020)
Physical Review Research 2(3): 033077.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
Es wurden keine Dateien hochgeladen. Nur Publikationsnachweis!
Autor*in
Abstract / Bemerkung
Recent research demonstrated the electrical switching of antiferromagnets via intrinsic spin-orbit torque or the spin Hall effect of an adjacent heavy metal layer. The electrical readout is typically realized by measuring the transverse anisotropic magnetoresistance at planar cross- or star-shaped devices with four or eight arms, respectively. Depending on the material, the current density necessary to switch the magnetic state can be large, often close to the destruction threshold of the device. We demonstrate that the resulting electrical stress changes the film resistivity locally and thereby breaks the fourfold rotational symmetry of the conductor. This symmetry breaking due to film inhomogeneity produces signals, that resemble the anisotropic magnetoresistance and is experimentally seen as a "saw-tooth"-shaped transverse resistivity. This artifact can persist over many repeats of the switching experiment and is not easily separable from the magnetic contribution. We discuss the origin of the artifact, elucidate the role of the film crystallinity, and propose approaches how to separate the resistive contribution from the magnetic contribution.
Erscheinungsjahr
2020
Zeitschriftentitel
Physical Review Research
Band
2
Ausgabe
3
Art.-Nr.
033077
eISSN
2643-1564
Page URI
https://pub.uni-bielefeld.de/record/2950738

Zitieren

Matalla-Wagner T, Schmalhorst J-M, Reiss G, Tamura N, Meinert M. Resistive contribution in electrical-switching experiments with antiferromagnets. Physical Review Research. 2020;2(3): 033077.
Matalla-Wagner, T., Schmalhorst, J. - M., Reiss, G., Tamura, N., & Meinert, M. (2020). Resistive contribution in electrical-switching experiments with antiferromagnets. Physical Review Research, 2(3), 033077. doi:10.1103/PhysRevResearch.2.033077
Matalla-Wagner, T., Schmalhorst, J. - M., Reiss, G., Tamura, N., and Meinert, M. (2020). Resistive contribution in electrical-switching experiments with antiferromagnets. Physical Review Research 2:033077.
Matalla-Wagner, T., et al., 2020. Resistive contribution in electrical-switching experiments with antiferromagnets. Physical Review Research, 2(3): 033077.
T. Matalla-Wagner, et al., “Resistive contribution in electrical-switching experiments with antiferromagnets”, Physical Review Research, vol. 2, 2020, : 033077.
Matalla-Wagner, T., Schmalhorst, J.-M., Reiss, G., Tamura, N., Meinert, M.: Resistive contribution in electrical-switching experiments with antiferromagnets. Physical Review Research. 2, : 033077 (2020).
Matalla-Wagner, Tristan, Schmalhorst, Jan-Michael, Reiss, Günter, Tamura, Nobumichi, and Meinert, Markus. “Resistive contribution in electrical-switching experiments with antiferromagnets”. Physical Review Research 2.3 (2020): 033077.

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Suchen in

Google Scholar