Journal
PHYSICAL REVIEW B
Volume 89, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.201408
Keywords
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Funding
- European Union [604391]
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By performing ab initio calculations for one-to four-layer black phosphorus within the GW approximation, we obtain a significant difference in the band gap (similar to 1.5 eV), which is in line with recent experimental data. The results are analyzed in terms of the constructed four-band tight-binding model, which gives accurate descriptions of the mono-and bilayer band structure near the band gap, and reveal an important role of the interlayer hoppings, which are largely responsible for the obtained gap difference.
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