X-ray scattering study of the Ge(001): Te(1X1) surface structure

The 1 x 1 surface structure of Te adsorbed on Ge(001) was studied by analyz ing the x-ray scattered intensity along several surface crystal truncation rods (CTR). The results were compared to simulations corresponding to the b ridge, top, antibridge, and hollow site models. Te at the bridge site was i n best agreement. More complex surface models based an modifications of Te at the bridge site were then compared to the data with the missing-row mode l being in better agreement than the zigzag model. Finally, the CTR data we re used to refine the structural parameters of the missing row model.