Comparison of Measured and Calculated Specific Resistances of Pd/Pt Interfaces

Details Comparison of Measured and Calculated Specific Resistances of Pd/Pt Interfaces Comparison of Measured and Calculated Specific Resistances of Pd/Pt Interfaces

2005-05-19

arxiv.org/abs/cond-mat/0505488v2

Physics

Condensed Matter

Materials Science

3 pages, 3 figures, submitted for publication New version has corrected value of delta(Pd/Pt)

Scientific paper

10.1063/1.2149978

We compare specific resistances (AR equals area A times resistance R) of sputtered Pd/Pt interfaces measured in two different ways with no-free-parameter calculations. One way gives 2AR(Pd/Pt) of 0.29 (0.03) fohm-m(2) and the other 0.17 (0.13) fohm-m(2). From these we derive a best estimate of 2AR(Pd/Pt) of 0.28 (0.06) fohm-m(2), which overlaps with no-free-parameter calculations: 2AR(predicted) of 0.30 (0.04) fohm-m(2) for flat, perfect interfaces, or 0.33 (0.04) fohm-m(2) for interfaces composed of 2 monolayers of a 50percent-50percent PdPt alloy. These results support three prior examples of agreement between calculations and measurements for pairs of metals having the same crystal structure and the same lattice parameter to within 1 percent. We also estimate the spin-flipping probability at Pd/Pt interfaces as 0.13 (0.08).

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