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The effect of structural interface imperfections on the interlayer magnetic coupling is studied theoretically by considering (i) a macroscopic model of roughness for possible fluctuations of spacer thickness, and (ii) a microscopic model of interdiffusion at ideal interfaces. For the Co/Cu/Co(001) system, we found a dramatic decrease of the amplitudes of the oscillations even for a small amount of interface imperfections, particularly strong for the short period oscillations, and thus indicating a possible source of discrepancy between ab initio calculations and experiment. {} 1996 The American Physical Society.
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Kudrnovský et al. (1996) studied this question.
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