Phys. Rev. Lett. 83, 2417–2420 (1999)

Mystery of the Alkali Metals: Giant Moments of Fe and Co on and in Cs films

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H. Beckmann and G. Bergmann^*
Department of Physics, University of Southern California, Los Angeles, California 90089-0484

Received 24 May 1999; published in the issue dated 20 September 1999

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Thin films of Cs are covered with 1/100 of a monolayer of Fe or Co. Then the impurities are covered with several atomic layers of Cs. The magnetization of the films is measured by means of the anomalous Hall effect. The magnetization follows a Brillouin function with a magnetic moment of about 8 Bohr magnetons for Co on the surface and in the bulk of the Cs. For the Fe impurities, a magnetic moment of 7 Bohr magnetons is observed. These large moments suggest that the 3d impurities polarize the conduction electrons of the Cs similar to the giant moments in Pd.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.83.2417

DOI:

10.1103/PhysRevLett.83.2417

PACS:

75.20.Hr

^*Electronic address: bergmann@usc.edu

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Phys. Rev. Lett. 83, 2417–2420 (1999)

Mystery of the Alkali Metals: Giant Moments of Fe and Co on and in Cs films

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