Multi-terminal spin valve in a strong Rashba channel exhibiting three resistance states

Title
Multi-terminal spin valve in a strong Rashba channel exhibiting three resistance states
Authors
장준연구현철김형준홍석민한석희이주현Shehrin SayedSupriyo Datta
Keywords
Rashba effect; Multi-terminal spin valve; Reciprocity
Issue Date
2018-02
Publisher
Scientific Reports
Citation
VOL 8-3397-2
Abstract
In a strong spin-orbit interaction system, the existence of three resistance states were observed when two ferromagnetic (FM) contacts were used as current terminals while a separate normal metal contact pair was used as voltage terminals. This result is strikingly different from ordinary spin valve or magnetic tunnel junction devices, which have only two resistance states corresponding to parallel (R-P) and antiparallel (R-AP) alignments of the FM contacts. Our experimental results on a quantum well layer with a strong Rashba effect clearly exhibit unequal antiparallel states, i.e., R-AP(1) > R-P > R-AP(2), up to room temperature. The three-states are observed without any degradation when the distance between the non-magnetic voltage probe and the ferromagnetic current probe was increased up to 1.6 mm.
URI
http://pubs.kist.re.kr/handle/201004/67339
ISSN
2045-2322
Appears in Collections:
KIST Publication > Article
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