EXAFS Study of Semimagnetic Semiconductors Zn1-xMnxTe: Mn 3d Electronic States and Mn-Te Local Coordination

Abstract

We have made EXAFS measurements of Zn_1-xMn_xTe (x≤0.65) on the Zn and Mn K-edges to investigate local environments around the Zn and Mn atoms. It is found that the Zn-Te and Mn-Te bond lengths remain almost unchanged with the variation of Mn concentration and the Mn-Te bond lengths are very close to those of Cd_1-xMn_xTe. These results confirm the interpretation proposed for the close similarity of Mn 3d partial density of states between Zn_0.7Mn_0.3Te and Cd_0.8Mn_0.2Te.