One-Dimensional Nanotemplate Structure of a Si(110) Substrate

Abstract

The process for the formation of a single-domain one-dimensional nanotemplate with a 16×2 reconstruction was investigated via scanning tunneling microscopy. Si (110) substrates with different resistivities were heated with direction-controlled direct currents. It was determined that obtaining a single-domain 16×2 reconstructed structure for a substrate with a lower resistivity even at the same annealing temperature is time consuming, which indicates that applied voltage rather than current flow plays a dominant role in single-domain formation.

Unique surface structure formations on a Ge-covered Si(110)-16×2 surface

“…1, STM indicates that a single-domain structure in the [112] direction is formed over the surface. The spacing between adjacent stripes is approximately 5 nm, and the height of each stripe is 0.2 nm, which agrees with the previously reported values [17]. The inset LEED image in Fig.…”

“…The 16 Â 2 surface periodicity is deteriorated by such structures, which prevents using this surface as a template. Therefore, to fabricate a welldefined single-domain 16 Â 2 structure, we have utilized the direction-controlled direct current (dc) heating method [16,17].…”