Friedel oscillation about a Friedel-Anderson impurity |
| |
Authors: | Y Tao G Bergmann |
| |
Institution: | 1.Department of Physics & Astronomy,University of Southern California Los Angeles,California,USA |
| |
Abstract: | The Friedel oscillations in the vicinity of a Friedel-Anderson (FA) impurity are investigated numerically. For an FA impurity
in the local moment limit the normalized amplitude A(ξ) is S-shaped, approximately zero at short distances, approaching two at large distances and crossing the value one at the
characteristic length ξ
1/2. Surprisingly, the Friedel oscillations of a simple non-interacting Friedel impurity with a narrow resonance at the Fermi
level show a very similar behavior of their amplitude A(ξ). A comparison correlates the resonance width and the Kondo energy of the FA impurity with the characteristic length ξ
1/2 of the Friedel oscillations. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|