Abstract
The electronic properties of honeycomb borophene under strain were investigated using first principles. The biaxial tensile strain was found to alter the interlayer interaction between the substrate layer and the sample layer, manifested as controlled by strain in a commensurate contact state intralayer and interlayer coupling strength. In addition, honeycomb borophene was found to have an anomalous strain-dependent charge density. We explain that this charge density fluctuation is determined by the electron-deficient nature of borophene itself and the change in the amount of electron injection into the borophene layer under strain. This study provides new insights into the changes in the interaction between two-dimensional materials and substrate layers under strain.
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