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Based on first principles calculations, we show that both cohesive energy and string tension dictate the chiral selectivity of Au nanotubes (AuNTs). Moreover, they are linearly correlated with a new parameter that represents the bending degree of AuNTs. Upon the formation of AuNTs from planar Au belts, the energy of Au-dxy and Au-dx2−y2 bands is upshifted, which thus decreases the cohesive energy...
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