Simultaneous detection of the spin-Hall magnetoresistance and the spin-Seebeck effect in Platinum and Tantalum on Yttrium Iron Garnet

Abstract

The spin-Seebeck effect (SSE) in platinum (Pt) and tantalum (Ta) on yttrium iron garnet (YIG) has been investigated by both externally heating the sample (using an on-chip Pt heater on top of the device) as well as by current-induced heating. For SSE measurements, external heating is the most common method to obtain clear signals. Here we show that also by current-induced heating it is possible to directly observe the SSE, separate from the also present spin-Hall magnetoresistance (SMR) signal, by using a lock-in detection technique. Using this measurement technique, the presence of additional 2nd order signals at low applied magnetic fields and high heating currents is revealed. These signals are caused by current-induced magnetic fields (Oersted fields) generated by the used AC-current, resulting in dynamic SMR signals.

9 pages, 6 figures

References in corpus (3)

• Spin Seebeck insulator
• Theory of spin Hall magnetoresistance
• Current-induced spin torque resonance of magnetic insulators

Cited by in corpus (13)

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• Magnetic properties and domain structure of ultrathin yttrium iron garnet/Pt bilayers
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• Role of spin mixing conductance in determining thermal spin pumping near the ferromagnetic phase transition in EuO_{1-x} and La2NiMnO6
• Spin-Hall effect and emergent antiferromagnetic phase transition in n-Si
• Thermal induced monochromatic microwave generation in magnon-polariton
• Spin driven emergent antiferromagnetism and metal insulator transition in nanoscale p-Si
• Probing current-induced magnetic fields in Au|YIG heterostructure with low-energy muon spectroscopy
• Effect of Quantum Tunneling on Spin Hall Magnetoresistance