Journals of the American Physical Society - Anomalous magnetic phases in Fe/Cu(001) ultrathin films induced by CO adsorption

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December 2007, to be published in Physical Review B1

Anomalous magnetic phases in Fe/Cu(001) ultrathin films induced by CO adsorption
H. Abe, K. Amemiya, D. Matsumura, J. Miyawaki, E. O. Sako, T. Ohtsuki, E. Sakai, and T. Ohta

Effects of CO adsorption on the magnetic properties of Fe films on Cu(001) were studied at 100 K as a function of the film thickness. CO adsorption does not affect the magnetic property of 2 ML Fe film, but induces the spin reorientation from out-of-plane to in-plane magnetization for 3 and 4 ML films. It also causes the decrease of magnetization, which can be attributed to the reduction in surface magnetization. Fe films of 6 and 8 ML lose their magnetization by CO adsorption. Possible interpretations for these complicated magnetic behaviors are discussed.

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