Strongly enhanced magnetic moments of vanadium impurities in thin films of sodium and potassium |
| |
Authors: | Song Funing Bergmann Gerd |
| |
Institution: | Department of Physics, University of Southern California, Los Angeles, California 90089-0484, USA. |
| |
Abstract: | Thin quench-condensed films of Na and K are covered with 1/100 of a monolayer of V. Then the impurities are covered with several atomic layers of the host. The magnetization of the films is measured by means of the anomalous Hall effect. For V impurities on the surface of Na and K, a magnetic moment of 7 Bohr magnetons is observed. After coverage with the host, the V moment became 6.5 mu(B) for the Na host. These results contradict the favored atomic model (predicting 3/5 mu(B)) and the resonance model. A polarization of the alkali host appears to be the only resolution. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|