Anomalous and planar Righi-Ledu effectcts measured in ferromagnetic YIG and NiFe

作者：Madon B^*; Pham Do Ch; Lacour D; Anane A; Bernard R; Cros V; Hehn M; Wegrowe J E

来源：8th Spintronics Symposium, 2015-08-09 To 2015-08-13.

DOI：10.1117/12.2190101

• Spintronics
• Nernst
• Righi-Leduc
• Anisotropic transport
• Spin-Seebeck

We report here about a comparative study of the anomalous and planar Righi-Leduc effect performed on both NiFe and YIG ferromagnets. For the first time, the magneto-thermal effect is measured with a thin electrode deposited on the top of a ferromagnetic layer. This electrode plays the role of the thermocouple. The corresponding magneto-thermo-voltage is measured as a function of the quasi-static magnetization states. It is shown that, for a heat current confined in the plane of the ferromagnetic layer and oriented perpendicular to the electrode, the Magnon-Hall signal follows a 360 degrees periodicity as a function of the out-of-plane angle of the magnetization, while the Planar Righi-Leduc signal follows a 180 degrees periodicity as a function of the in-plane angle.
The relation between these observations and the occurrence of the inverse spin-Hall effect (which is responsible for the spin-Seebecl effect[3]) is discussed.

• 出版日期2015
• 单位中国地震局