TY - JOUR
T1 - Four-terminal nonlocal signals in lateral spin transport devices with variously ordered Co2FeAl0.5Si0.5 full-Heusler alloy electrodes
AU - Saito, Tatsuya
AU - Tezuka, Nobuki
AU - Matsuura, Masashi
AU - Sugimoto, Satoshi
N1 - Funding Information:
This work was partly supported by Asahi Glass Foundation, Grants-in-Aid for Scientific Research (B) (22360002) and (S) (22226001), JSPS fellowships, and the Strategic Japanese-German Joint Research Program “ASPIMATT” from JST.
PY - 2013/9/16
Y1 - 2013/9/16
N2 - The structural ordering of the Co2FeAl0.5Si 0.5 (CFAS) full-Heusler alloy, the electrical transport properties, and the four-terminal (4T) nonlocal signals were investigated in lateral spin transport devices with CFAS/n-GaAs Schottky tunnel junctions as a function of the deposition temperature of CFAS (TCFAS). The 4T nonlocal signals increased with increasing TCFAS, in contrast to the trend in three-terminal Hanle measurements [Jpn. J. Appl. Phys., Part 1 52, 063001 (2013)]. No relationship between interface resistance and 4T nonlocal signal was confirmed, indicating that conductance mismatch problems did not affect the tendency of signal values.
AB - The structural ordering of the Co2FeAl0.5Si 0.5 (CFAS) full-Heusler alloy, the electrical transport properties, and the four-terminal (4T) nonlocal signals were investigated in lateral spin transport devices with CFAS/n-GaAs Schottky tunnel junctions as a function of the deposition temperature of CFAS (TCFAS). The 4T nonlocal signals increased with increasing TCFAS, in contrast to the trend in three-terminal Hanle measurements [Jpn. J. Appl. Phys., Part 1 52, 063001 (2013)]. No relationship between interface resistance and 4T nonlocal signal was confirmed, indicating that conductance mismatch problems did not affect the tendency of signal values.
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U2 - 10.1063/1.4821451
DO - 10.1063/1.4821451
M3 - Article
AN - SCOPUS:84884853258
SN - 0003-6951
VL - 103
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 12
M1 - 122401
ER -