Choi, Won Young Kim, Hyung-jun Chang, Joonyeon Han, Suk Hee Koo, Hyun Cheol Johnson, Mark 2024-01-20T06:32:15Z 2024-01-20T06:32:15Z 2021-09-05 2015-08 1748-3387 https://pubs.kist.re.kr/handle/201004/125173 The spin-orbit interaction in two-dimensional electron systems provides an exceptionally rich area of research. Coherent spin precession in a Rashba effective magnetic field(1,2) in the channel of a spin field-effect transistor(3,4) and the spin Hall effect(5-7) are the two most compelling topics in this area. Here, we combine these effects to provide a direct demonstration of the ballistic intrinsic spin Hall effect(8) and to demonstrate a technique for an all-electric measurement of the Datta-Das(3) conductance oscillation, that is, the oscillation in the source-drain conductance due to spin precession. Our hybrid device has a ferromagnet electrode as a spin injector and a spin Hall detector. Results from multiple devices with different channel lengths map out two full wavelengths of the Datta-Das oscillation. We also use the original Datta-Das technique with a single device of fixed length and measure the channel conductance as the gate voltage is varied. Our experiments show that the ballistic spin Hall effect can be used for efficient injection or detection of spin polarized electrons, thereby enabling the development of an integrated spin transistor. English NATURE PUBLISHING GROUP INJECTION Electrical detection of coherent spin precession using the ballistic intrinsic spin Hall effect Article 10.1038/NNANO.2015.107 1 NATURE NANOTECHNOLOGY, v.10, no.8, pp.666 - 670 NATURE NANOTECHNOLOGY 10 8 666 670 scie scopus 000359754500008 2-s2.0-84938746305 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article INJECTION spin Hall effect Rashba effect