TY - JOUR
T1 - Enhancement of charge-to-spin current conversion in a Ni/Pt bilayer film detected by spin Peltier effect
AU - Yamazaki, Takumi
AU - Iguchi, Ryo
AU - Nagano, Hosei
AU - Uchida, Ken Ichi
N1 - Publisher Copyright:
© 2020 The Japan Society of Applied Physics.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - We demonstrate the enhancement of charge-to-spin current conversion by a ferromagnet/paramagnet interface. The enhancement is confirmed by comparing the spin Peltier effect (SPE) between Ni/Pt/yttrium-iron-garnet (YIG) and Pt/YIG hybrid structures, where the SPE signal is proportional to the spin current generated in the Ni/Pt or Pt layer. The SPE signal normalized by charge current density for the Ni/Pt/YIG system increases by 65% compared to the Pt/YIG system, which cannot be explained by other thermoelectric and thermo-spin effects. This result suggests the presence of additive charge-to-spin current conversion at the Ni/Pt interface, providing simple ways to improve spin-injection efficiency.
AB - We demonstrate the enhancement of charge-to-spin current conversion by a ferromagnet/paramagnet interface. The enhancement is confirmed by comparing the spin Peltier effect (SPE) between Ni/Pt/yttrium-iron-garnet (YIG) and Pt/YIG hybrid structures, where the SPE signal is proportional to the spin current generated in the Ni/Pt or Pt layer. The SPE signal normalized by charge current density for the Ni/Pt/YIG system increases by 65% compared to the Pt/YIG system, which cannot be explained by other thermoelectric and thermo-spin effects. This result suggests the presence of additive charge-to-spin current conversion at the Ni/Pt interface, providing simple ways to improve spin-injection efficiency.
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U2 - 10.35848/1347-4065/ab8025
DO - 10.35848/1347-4065/ab8025
M3 - Article
AN - SCOPUS:85084394053
SN - 0021-4922
VL - 59
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 5
M1 - 050901
ER -