4 papers
Strain induced stabilization of stepped Si and Ge surfaces near (001)
V. B. Shenoy, C. V. Ciobanu, L. B. Freund
We report on calculations of the formation energies of several [100] and [110] oriented step structures on biaxially stressed Si and Ge (001) surfaces. It is shown that a novel reb…
Strain-induced quantum ring hole states in a gated vertical quantum dot
Jun Liu, A. Zaslavsky, L. B. Freund
We have experimentally investigated the hole states in a gated vertical strained Si/SiGe quantum dot. We demonstrate the inhomogeneous strain relaxation on the lateral surface crea…
A continuum description of the energetics and evolution of stepped surfaces in strained nanostructures
V. B. Shenoy, L. B. Freund
As a departure from existing continuum approaches for describing the stability and evolution of surfaces of crystalline materials, this article provides a description of surface ev…
Finite Element Analysis of Strain Effects on Electronic and Transport Properties in Quantum Dots and Wires
H. T. Johnson, L. B. Freund, C. D. Akyuz +1
Lattice mismatch in layered semiconductor structures with submicron length scales leads to extremely high nonuniform strains. This paper presents a finite element technique for inc…