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- W2896490858 abstract "$1Tensuremath{-}{mathrm{TaS}}_{2}$ is a charge-density-wave (CDW) compound with a Mott-insulating ground state. The metallic state obtained by doping, substitution, or pulsed charge injection is characterized by an emergent CDW domain-wall network, while single domain walls can be found in the pristine Mott state. Here we study whether and how the single walls become metallic. Tunneling spectroscopy reveals partial suppression of the Mott gap and the presence of in-gap states strongly localized at the domain-wall sites. Using the real-space dynamical mean field theory description of the strongly correlated quantum-paramagnet ground state, we show that the local gap suppression follows from the increased hopping along the connected zigzag chain of lattice sites forming the domain wall. Furthermore, we show that full metallization is preempted by the splitting of the quasiparticle band into bonding and antibonding subbands due to the structural dimerization of the wall, explaining the presence of the in-gap states and the low density of states at the Fermi level." @default.
- W2896490858 created "2018-10-26" @default.
- W2896490858 creator A5052543488 @default.
- W2896490858 creator A5062380534 @default.
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- W2896490858 date "2019-01-25" @default.
- W2896490858 modified "2023-10-12" @default.
- W2896490858 title "Mottness collapse without metallization in the domain wall of the triangular-lattice Mott insulator<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mn>1</mml:mn><mml:mi>T</mml:mi><mml:mo>−</mml:mo><mml:msub><mml:mrow><mml:mi>TaS</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W2896490858 doi "https://doi.org/10.1103/physrevlett.122.036802" @default.
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