Abstract
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 Ω, 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1436-1439 |
| Number of pages | 4 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 320 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2008 Apr 1 |
| Externally published | Yes |
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Keywords
- Interface resistance
- Spin transport
- Two-dimensional electron gas
ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Interface resistance dependence of spin transport in a ferromagnet-semiconductor hybrid structure. / Koo, Hyun Cheol; Kwon, Jae Hyun; Eom, Jonghwa; Chang, Joonyeon; Han, Suk Hee.
In: Journal of Magnetism and Magnetic Materials, Vol. 320, No. 8, 01.04.2008, p. 1436-1439.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Interface resistance dependence of spin transport in a ferromagnet-semiconductor hybrid structure
AU - Koo, Hyun Cheol
AU - Kwon, Jae Hyun
AU - Eom, Jonghwa
AU - Chang, Joonyeon
AU - Han, Suk Hee
PY - 2008/4/1
Y1 - 2008/4/1
N2 - 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 Ω, 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.
AB - 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 Ω, 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.
KW - Interface resistance
KW - Spin transport
KW - Two-dimensional electron gas
UR - http://www.scopus.com/inward/record.url?scp=39749123330&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=39749123330&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2007.12.001
DO - 10.1016/j.jmmm.2007.12.001
M3 - Article
VL - 320
SP - 1436
EP - 1439
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 8
ER -