Bulk and surface valence in YbPdx compounds

Domke, M. ; Laubschat, C. ; Sampathkumaran, E. V. ; Prietsch, M. ; Mandel, T. ; Kaindl, G. ; Middelmann, H. U. (1985) Bulk and surface valence in YbPdx compounds Physical Review B: Condensed Matter and Materials Physics, 32 (12). pp. 8002-8006. ISSN 1098-0121

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Official URL: http://prb.aps.org/abstract/PRB/v32/i12/p8002_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.32.8002


The bulk and surface valence v of Yb is investigated for YbPdx intermetallic compounds (with x=1,1.33,3) by photoemission using synchrotron radiation. YbPd is found to be of intermediate valence (v≃2.75), while Yb3Pd4 and YbPd3 are identified as bulk trivalent systems. The outermost atomic surface layer of both YbPd and Yb3Pd4 is found to be divalent, while only a fraction of Yb surface atoms turns divalent in YbPd3. The results are compared with bremsstrahlung isochromat spectroscopy measurements and predictions based on Miedema's scheme.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:45635
Deposited On:29 Jun 2011 03:14
Last Modified:29 Jun 2011 03:14

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