TY - JOUR
T1 - Effect of pressure on the giant magnetoresistance in Co/Cu magnetic multilayers
AU - Suenaga, Kazufumi
AU - Oomi, Gendo
AU - Sakai, Takeshi
AU - Saito, Kesami
AU - Takanashi, Koki
AU - Fujimori, Hiroyasu
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2006/2
Y1 - 2006/2
N2 - The effect of pressure and magnetic field on the temperature dependent electrical resistivity ρ(T) of the [Co(1.02nm)/Cu(t cu nm)] 25 magnetic multilayers (MML) with t Cu = 0.76 [ferromagnetic (F)] and 1.05 [antiferromagnetic (AF)] has been investigated at low temperature. MR ratio Δρ/ρ s for t Cu = 1.05 and 0.76 decreases with increasing pressure. The pressure dependent Δρ/ρ s for t Cu = 1.05 is more significant than that for 0.76. ρ(T) at H = 0 and above saturation field H S (H = 2 T) for Co/Cu MMLs is found to show T 2-dependence in the relatively wide temperature range, 4.2 ≤ T ≤ 20 K, at low temperature. The coefficient of T 2 term (= A) for F-state is larger than that for AF-state at ambient pressure. The change of A for t Cu = 1.05 at H = 0 is smaller than that at H = 2T. These results are discussed on the basis of the electron scattering at interfaces due to magnons or spin-wave.
AB - The effect of pressure and magnetic field on the temperature dependent electrical resistivity ρ(T) of the [Co(1.02nm)/Cu(t cu nm)] 25 magnetic multilayers (MML) with t Cu = 0.76 [ferromagnetic (F)] and 1.05 [antiferromagnetic (AF)] has been investigated at low temperature. MR ratio Δρ/ρ s for t Cu = 1.05 and 0.76 decreases with increasing pressure. The pressure dependent Δρ/ρ s for t Cu = 1.05 is more significant than that for 0.76. ρ(T) at H = 0 and above saturation field H S (H = 2 T) for Co/Cu MMLs is found to show T 2-dependence in the relatively wide temperature range, 4.2 ≤ T ≤ 20 K, at low temperature. The coefficient of T 2 term (= A) for F-state is larger than that for AF-state at ambient pressure. The change of A for t Cu = 1.05 at H = 0 is smaller than that at H = 2T. These results are discussed on the basis of the electron scattering at interfaces due to magnons or spin-wave.
KW - Co/Cu magnetic multilayer
KW - Giant magnetoresistance
KW - High pressure
KW - Spin-dependent scattering
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U2 - 10.1143/JPSJ.75.024702
DO - 10.1143/JPSJ.75.024702
M3 - Article
AN - SCOPUS:33244454482
VL - 75
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 2
M1 - 024702
ER -