Table 2.
Summary of the SMR at 77 K for all samples. ρ0 and Δρ/ρ0 are determined from Eq. 1, and Gr from Eq. 2. The spin diffusion length, λPt, was estimated based on the resistivity of the Pt films.
| Sample | tPt (nm) | ρ0 (10−7 Ω cm) | Δρ/ρ0 (10−4) | λPt (nm) | Gr (Ω−1 m−2) |
|---|---|---|---|---|---|
| A | 3.0 | 689.85 | 4.6 ± 0.2 | 1.80 | (4.96 ± 0.65) × 1014 |
| A1 | 3.0 | 569.89 | 4.3 ± 0.1 | 2.18 | (5.36 ± 0.25) × 1014 |
| B | 3.0 | 459.90 | 3.7 ± 0.3 | 2.70 | (5.54 ± 0.34) × 1014 |
| B1 | 3.0 | 499.93 | 4.0 ± 0.4 | 2.48 | (5.84 ± 0.48) × 1014 |
| C | 2.0 | 699.85 | 4.1 ± 0.2 | 1.77 | (7.16 ± 0.30) × 1014 |