2017/01/10 by Kathrin Ganzhorn, Tobias Wimmer, Ganzhorn, Kathrin +17 · 1 citation
Engineering · Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Magneto-Optical Properties and Applications #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Quantum and electron transport phenomena
paper · pdf · doi:10.48550/arxiv.1701.02635
openalex publication_date 2017/01/10 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
We study the transport of thermally excited non-equilibrium magnons through\nthe ferrimagnetic insulator YIG using two electrically isolated Pt strips as\ninjector and detector. The diffusing magnons induce a non- local inverse spin\nHall voltage in the detector corresponding to the so-called non-local spin\nSeebeck effect (SSE). We measure the non-local SSE as a function of temperature\nand strip separation. In experiments at room temperature we observe a sign\nchange of the non-local SSE voltage at a characteristic strip separation d0, in\nagreement with previous investigations. At lower temperatures however, we find\na strong temperature dependence of d0. This suggests that both the angular\nmomentum transfer across the YIG/Pt interface as well as the transport\nmechanism of the magnons in YIG as a function of temperature must be taken into\naccount to describe the non-local spin Seebeck effect.\n