Local and nonlocal spin Seebeck effect in lateral Pt–Cr2O3–Pt devices at low temperatures

  title={Local and nonlocal spin Seebeck effect in lateral Pt–Cr2O3–Pt devices at low temperatures},
  author={Prasanta Kumar Muduli and Richard Schlitz and Tobias Kosub and Ren{\'e} H{\"u}bner and Artur Erbe and Denys Makarov and Sebastian T. B. Goennenwein},
  journal={arXiv: Mesoscale and Nanoscale Physics},
We have studied thermally driven magnon spin transport (spin Seebeck effect, SSE) in heterostructures of antiferromagnetic $\alpha$-$\mathrm{Cr_2O_3}$ and Pt at low temperatures. Monitoring the amplitude of the local and nonlocal SSE signals as a function of temperature, we found that both decrease with increasing temperature and disappear above 100 K and 20 K, respectively. Additionally, both SSE signals show a tendency to saturate at low temperatures. The nonlocal SSE signal decays… 
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