Jin, Mi-Jin Moon, Seon Young Park, Jungmin Modepalli, Vijayakumar Jo, Junhyeon Kim, Shin-Ik Koo, Hyun Cheol Min, Byoung-Chul Lee, Hyun-Woo Baek, Seung-Hyub Yoo, Jung-Woo 2024-01-20T02:32:53Z 2024-01-20T02:32:53Z 2021-09-04 2017-01 1530-6984 https://pubs.kist.re.kr/handle/201004/123276 A two-dimensional electron gas emerged at a LaAlO3/SrTiO3 interface is an ideal system for "spin-orbitronics" as the structure itself strongly couple the spin and orbital degree of freedom through the Rashba spin orbit interaction. One of core experiments toward this direction is the nonlocal spin transport measurement, which has remained elusive due to the low spin injection efficiency to this system. Here we bypass the problem by generating a spin current not through the spin injection from outside but instead through the inherent spin Hall effect and demonstrate the nonlocal spin transport. The analysis on the nonlocal spin voltage, confirmed by the signature of a Larmor spin precession and its length dependence, displays that both D'yakonov-Perel' and Elliott-Yafet mechanisms involve in the spin relaxation at low temperature. Our results show that the oxide heterointerface is highly efficient in spin-charge conversion with exceptionally strong spin Hall coefficient gamma similar to 0.15 +/- 0.05 and could be an outstanding platform for the study of coupled charge and spin transport phenomena and their electronic applications. English AMER CHEMICAL SOC Nonlocal Spin Diffusion Driven by Giant Spin Hall Effect at Oxide Heterointerfaces Article 10.1021/acs.nanolett.6b03050 1 NANO LETTERS, v.17, no.1, pp.36 - 43 NANO LETTERS 17 1 36 43 scie scopus 000392036600006 2-s2.0-85016233490 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article 2-DIMENSIONAL ELECTRON GASES LAALO3/SRTIO3 INTERFACE INDUCED POLARIZATION SRTIO3 FILMS FERROMAGNETISM HETEROSTRUCTURES MOBILITY SUPERCONDUCTIVITY COEXISTENCE PRECESSION Oxide heterointerface Spin Hall effect nonlocal spin diffusion Rashba spin-orbit interaction spin-orbitronics