I. Daruka, J. Tersoff
Physical Review Letters
Strained epitaxial layers tend initially to grow as dislocation-free islands. Here we show that such islands, as they increase in size, may undergo a shape transition. Below a critical size, islands have a compact, symmetric shape. But at larger sizes, they adopt a long thin shape, which allows better elastic relaxation of the island's stress. We have observed such elongated islands, with aspect ratios greater than 50:1, in low energy electron microscopy studies of growth of Ag on Si(001). These islands represent a novel approach to the fabrication of ''quantum wires.'' © 1993 The American Physical Society.
I. Daruka, J. Tersoff
Physical Review Letters
R.M. Tromp, M.C. Reuter
Physical Review Letters
M. Copel, R.M. Tromp
Physical Review B
T.S. Kuan, P.E. Batson, et al.
IBM J. Res. Dev