Choi, Gyung-Min Moon, Chul-Hyun Min, Byoung-Chul Lee, Kyung-Jin Cahill, David G. 2024-01-20T06:34:03Z 2024-01-20T06:34:03Z 2021-09-05 2015-07 1745-2473 https://pubs.kist.re.kr/handle/201004/125268 The coupling of spin and heat gives rise to new physical phenomena in nanoscale spin devices. In particular, spin-transfer torque (STT) driven by thermal transport provides a new way to manipulate local magnetization. We quantify thermal STT in metallic spin-valve structures using an intense and ultrafast heat current created by picosecond pulses of laser light. Our result shows that thermal STT consists of demagnetization-driven and spin-dependent Seebeck effect (SDSE)-driven components; the SDSE-driven STT becomes dominant after 3 ps. The sign and magnitude of the SDSE-driven STT can be controlled by the composition of a ferromagnetic layer and the thickness of a heat sink layer. English NATURE PUBLISHING GROUP Thermal spin-transfer torque driven by the spin-dependent Seebeck effect in metallic spin-valves Article 10.1038/NPHYS3355 1 NATURE PHYSICS, v.11, no.7, pp.576 - U87 NATURE PHYSICS 11 7 576 U87 scie scopus 000357197300024 2-s2.0-84934864863 Physics, Multidisciplinary Physics Article MAGNETIC MULTILAYER MAGNETORESISTANCE EXCITATION FERROMAGNET INJECTION