Koo, Hyun Cheol Kwon, Jae Hyun Eom, Jonghwa Chang, Joonyeon Han, Suk-Hee 2024-01-20T23:33:06Z 2024-01-20T23:33:06Z 2021-08-31 2008-04 0304-8853 https://pubs.kist.re.kr/handle/201004/133628 The spin transport signals from NiFe and Co into two-dimensional electron gas layers are measured for various thicknesses of transmission barriers. A stable and reproducible electrical detection of spin transport was obtained only when the barrier thickness is less than 10 nm. The typical interface resistance to observe spin signals in this experiment is about 0.5 - 250 Omega, which is a neither transparent nor a severe tunneling limit. The optimal interface resistance depends on the ferromagnetic materials, but severe tunneling barrier is not proper for fully electrical spin transport. Device size is also a critical factor to decide the proper range of interface resistance. (c) 2007 Published by Elsevier B.V. English ELSEVIER SCIENCE BV INJECTION Interface resistance dependence of spin transport in a ferromagnet-semiconductor hybrid structure Article 10.1016/j.jmmm.2007.12.001 1 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, v.320, no.8, pp.1436 - 1439 JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 320 8 1436 1439 scie scopus 000254420400008 2-s2.0-39749123330 Materials Science, Multidisciplinary Physics, Condensed Matter Materials Science Physics Article INJECTION spin transport interface resistance two-dimensional electron gas