Electrical switching of antiferromagnetic CoO | Pt across the Neel temperature

被引:6
|
作者
Grzybowski, M. J. [1 ,2 ]
Schippers, C. F. [1 ]
Bal, M. E. [3 ]
Rubi, K. [3 ,5 ]
Zeitler, U. [3 ]
Foltyn, M. [4 ]
Koopmans, B. [1 ]
Swagten, H. J. M. [1 ]
机构
[1] Eindhoven Univ Technol, Dept Appl Phys, NL-5600 MB Eindhoven, Netherlands
[2] Univ Warsaw, Fac Phys, Inst Expt Phys, Ul Pasteura 5, PL-02093 Warsaw, Poland
[3] Radboud Univ Nijmegen, High Field Magnet Lab HFML EMFL, NL-6525 ED Nijmegen, Netherlands
[4] Polish Acad Sci, Inst Phys, Aleja Lotnikow 32-46, PL-02668 Warsaw, Poland
[5] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
基金
荷兰研究理事会;
关键词
Antiferromagnetism - Temperature distribution - Switching;
D O I
10.1063/5.0090484
中图分类号
O59 [应用物理学];
学科分类号
摘要
One of the most important challenges in antiferromagnetic spintronics is the readout of the Neel vector state. High current densities up to 10(8) Acm(-2) used in the electrical switching experiments cause notorious difficulty in distinguishing between magnetic and thermal origins of the electrical signals. To overcome this problem, we present a temperature dependence study of the transverse resistance changes in the switching experiment with CoO | Pt devices. We demonstrate the possibility to extract a pattern of spin Hall magnetoresistance for current pulses with a density of 5 x 10(7) A cm(-2) that is present only below the Neel temperature and does not follow a trend expected for thermal effects. This is the compelling evidence for the magnetic origin of the signal, which is observed using purely electrical techniques. We confirm these findings by complementary experiments in an external magnetic field. Such an approach can allow determining the optimal conditions for switching antiferromagnets and be very valuable when no imaging techniques can be applied to verify the origin of the electrical signal.
引用
收藏
页数:4
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