The insulating surface of metallic 1T-TaSe₂ is a band insulator from CDW stacking reconstruction, not a Mott insulator, as shown by DFT calculations that quantitatively reproduce experimental tunneling spectra.
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Surface-Reconstruction-Driven Insulating Behavior in Metallic Charge-Density-Wave 1T-TaSe$_{2}$
The insulating surface of metallic 1T-TaSe₂ is a band insulator from CDW stacking reconstruction, not a Mott insulator, as shown by DFT calculations that quantitatively reproduce experimental tunneling spectra.