English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Elastic response of cubic crystals to biaxial strain: Analytic results and comparison to density functional theory for InAs

MPS-Authors
/persons/resource/persons21597

Hammerschmidt,  Thomas
Theory, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21760

Kratzer,  Peter
Theory, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22064

Scheffler,  Matthias
Theory, Fritz Haber Institute, Max Planck Society;

Locator
There are no locators available
Fulltext (public)
There are no public fulltexts available
Supplementary Material (public)
There is no public supplementary material available
Citation

Hammerschmidt, T., Kratzer, P., & Scheffler, M. (2007). Elastic response of cubic crystals to biaxial strain: Analytic results and comparison to density functional theory for InAs. Physical Review B, 75(23), 235328-1-235328-6. Retrieved from http://dx.doi.org/10.1103/PhysRevB.75.235328.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-0074-3
Abstract
The elastic energy of a biaxially strained material depends on both the magnitude and the plane of the applied biaxial strain, and the elastic properties of the material. We employ continuum-elasticity theory (CET) to determine general analytic expressions for the strain tensor, the Poisson ratio, and the elastic energy for materials with cubic crystal symmetry exposed to biaxial strain in arbitrary planes. In application to thin homogeneously strained films on a substrate, these results enable us to estimate the role of elastic energy for any substrate orientation. When calculating the elastic response to biaxial strain in an arbitrary plane by numerical methods, our analytic results make it possible to set up these calculations in a much more efficient way. This is demonstrated by density-functional theory calculations of the Poisson ratio and elastic energy upon biaxial strain in several planes for the case of InAs. The results are in good agreement with those of CET, but show additional nonlinear contributions already at moderate biaxial strain.