TY - JOUR
T1 - Combinatorial investigation of spin-orbit materials using spin Peltier effect
AU - Uchida, Ken ichi
AU - Sasaki, Michiko
AU - Sakuraba, Yuya
AU - Iguchi, Ryo
AU - Daimon, Shunsuke
AU - Saitoh, Eiji
AU - Goto, Masahiro
N1 - Funding Information:
The authors thank T. Seki and A. Tsukazaki for valuable discussions and M. Isomura, N. Kojima, H. Ikeda, and K. Oyanagi for technical supports. This work was supported by CREST “Creation of Innovative Core Technologies for Nano-enabled Thermal Management” (JPMJCR17I1) and “Scientific Innovation for Energy Harvesting Technology” (JPMJCR16Q5), PRESTO “Phase Interfaces for Highly Efficient Energy Utilization” (JPMJPR12C1) and “Scientific Innovation for Energy Harvesting Technology” (JPMJPR17R5), ERATO “Spin Quantum Rectification Project” (JPMJER1402), and the Materials research by Information Integration Initiative (MI2I) program from JST, Japan; Grant-in-Aid for Scientific Research (A) (JP15H02012) and Grant-in-Aid for Scientific Research (S) (JP18H05246) from JSPS KAKENHI, Japan; and the NEC Corporation.
Publisher Copyright:
© 2018, The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Conversion between spin and charge currents is essential in spintronics, since it enables spin-orbit-torque magnetization switching, spin-current-driven thermoelectric generation, and nano-scale thermal energy control. To realize efficient spin-charge conversion, a variety of mechanisms, including spin Hall effects, Rashba-Edelstein effects, and spin-momentum locking in topological insulators, have been investigated and more comprehensive material exploration is necessary. Here we demonstrate high-throughput screening of spin-charge conversion materials by means of the spin Peltier effect (SPE). This is enabled by combining recently-developed SPE-imaging techniques with combinatorial materials science; using a composition-spread alloy film formed on a magnetic insulator, we observe the SPE-induced temperature change due to the spin Hall effect and obtain a continuous mapping of its composition dependence from the single sample. The distribution of the SPE signals reflects local spin-charge conversion capability in the alloy owing to unique heat-generation nature of the SPE. This combinatorial approach will accelerate materials research towards high-performance spintronic devices.
AB - Conversion between spin and charge currents is essential in spintronics, since it enables spin-orbit-torque magnetization switching, spin-current-driven thermoelectric generation, and nano-scale thermal energy control. To realize efficient spin-charge conversion, a variety of mechanisms, including spin Hall effects, Rashba-Edelstein effects, and spin-momentum locking in topological insulators, have been investigated and more comprehensive material exploration is necessary. Here we demonstrate high-throughput screening of spin-charge conversion materials by means of the spin Peltier effect (SPE). This is enabled by combining recently-developed SPE-imaging techniques with combinatorial materials science; using a composition-spread alloy film formed on a magnetic insulator, we observe the SPE-induced temperature change due to the spin Hall effect and obtain a continuous mapping of its composition dependence from the single sample. The distribution of the SPE signals reflects local spin-charge conversion capability in the alloy owing to unique heat-generation nature of the SPE. This combinatorial approach will accelerate materials research towards high-performance spintronic devices.
UR - http://www.scopus.com/inward/record.url?scp=85055614816&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055614816&partnerID=8YFLogxK
U2 - 10.1038/s41598-018-34493-6
DO - 10.1038/s41598-018-34493-6
M3 - Article
C2 - 30375471
AN - SCOPUS:85055614816
SN - 2045-2322
VL - 8
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 16067
ER -