Activity: Talk or presentation › Oral presentation
The reconstruction with the lowest surface free energy per unit area at room temperature of the semiconductor group IV (001) surfaces is generally believed to be (2x1). However, room temperature scanning tunneling microscopy measurements of extremely clean Ge(001) reveal the presence of an ordered domain pattern consisting of c(4x2) and (2x1) domains arranged in stripes with a width of several dimer row spacings, oriented along the dimer rows. We show that although (2x1) and c(4x2) have comparable surface free energies per unit area, an striped domain phase consisting of (2x1) and c(4x2) domains has a lower surface free energy per unit area.
22 Mar 1999
DPG Frühjahrstagung 1999 Münster: (DPG Spring Meeting)