Abstract
The spin Peltier effect (SPE) in a junction comprising a gadolinium-iron-garnet (GdIG) slab and a Pt film has been investigated around the magnetization compensation temperature of GdIG by means of the lock-in thermography method. When a charge current is applied to the Pt layer, a spin current is generated across the Pt/GdIG interface via the spin Hall effect in Pt. This spin current induces a heat current and a measurable temperature change near the Pt/GdIG interface due to the SPE. The SPE signal in the Pt/GdIG junction shows a sign change around the magnetization compensation temperature, demonstrating the similar temperature dependence of the SPE and the spin Seebeck effect for the Pt/GdIG hybrid system.
| Original language | English |
|---|---|
| Article number | 194002 |
| Journal | Journal of Physics D: Applied Physics |
| Volume | 51 |
| Issue number | 19 |
| DOIs | |
| State | Published - 20 Apr 2018 |
Keywords
- spin Peltier effect
- spin Seebeck effect
- spin caloritronics
- spin current
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