Determination of interfacial strain distribution in quantum-wire structures by synchrotron x-ray scattering
نویسندگان
چکیده
High-resolution grating x-ray diffraction from a periodic quantum-wire structure is shown to be highly sensitive to strain-field variations near a surface or an interface. Information on two types of strain gradients can be obtained: a longitudinal gradient, which can produce asymmetric diffraction profiles, and a transverse gradient, which can generate additional diffuse intensity streaks in reciprocal space. These effects are demonstrated in a synchrotron x-ray experiment on an In0.2Ga0.8As/GaAs quantum-wire array. Kinematical diffraction theory is used to describe the diffraction patterns and is found to agree very well with the experimental results. @S0163-1829~97!06924-5#
منابع مشابه
X-ray-diffraction study of size-dependent strain in quantum-wire structures.
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