Two kinds of substituted systems, Yb4(As1-xSe x)3 and Yb4(As1-xSb x)3, were investigated to clarify the electronic structure of Yb4As3. By the comparison of the magnetic and transport properties of these systems, it is revealed that the Se-substitution causes the decrease of the Yb3+ ions, while the Sb-substitution causes the increase of the holes and the decrease of the Yb3+ ions simultaneously. These results indicate that the number of the holes on the valence p-band almost corresponds to the number of the Yb2+ ions on the one-dimensional magnetic chains in Yb4As3. This scenario could explain many physical properties of the substituted and non-doped Yb4As3.
ASJC Scopus subject areas
- Physics and Astronomy(all)