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- W2798395280 abstract "The $tensuremath{-}J$ model is a standard model of strongly correlated electrons, often studied in the context of high-${T}_{c}$ superconductivity. However, most studies of this model neglect three-site terms, which appear at the same order as the superexchange $J$. As these terms correspond to pair hopping, they are expected to play an important role in the physics of superconductivity when doped sufficiently far from half filling. We present a density matrix renormalization-group study of the one-dimensional $tensuremath{-}J$ model with the pair hopping terms included. We demonstrate that these additional terms radically change the one-dimensional ground-state phase diagram, extending the superconducting region at low fillings, while at larger fillings, superconductivity is completely suppressed. We explain this effect by introducing a simplified effective model of repulsive hardcore bosons." @default.
- W2798395280 created "2018-05-07" @default.
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- W2798395280 date "2018-07-13" @default.
- W2798395280 modified "2023-10-15" @default.
- W2798395280 title "Ground-state phase diagram of the one-dimensional <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mrow><mml:mi>t</mml:mi><mml:mo>−</mml:mo><mml:mi>J</mml:mi></mml:mrow></mml:math> model with pair hopping terms" @default.
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- W2798395280 doi "https://doi.org/10.1103/physrevb.98.035116" @default.
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