In the 1D Fermi-Hubbard model with opposing spin-dependent linear potentials, the ground state shows three regimes with a staircase-like reduction in bound pairs as the gradient increases, enabling integer-level control of pairing.
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Ground state of the Hubbard model with spin-dependent linear potential
In the 1D Fermi-Hubbard model with opposing spin-dependent linear potentials, the ground state shows three regimes with a staircase-like reduction in bound pairs as the gradient increases, enabling integer-level control of pairing.