Two-hole bound states in modified t-J model

Abstract

We consider modified $t-J$ model with minimum of single-hole dispersion at the points $(0,\pm \pi )$, $(\pm \pi ,0)$. It is shown that two holes on antiferromagnetic background produce a bound state which properties strongly differs from the states known in the unmodified $t-J$ model. The bound state is d-wave, it has four nodes on the face of the magnetic Brillouin zone. However, in the coordinate representation it looks like as usual s-wave.

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References in corpus (6)

• Antiferromagnetic and van Hove Scenarios for the Cuprates: Taking the Best of Both Worlds
• Binding of holes and pair spectral function in the t-J model
• Reduction of three-band model for copper oxides to single-band generalized t~-~J model
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Cited by in corpus (4)

• Coexistence of incommensurate magnetism and superconductivity in the two-dimensional Hubbard model
• Two-hole problem in the t-J model: A canonical transformation approach
• Studies of one- and two-hole states in the 2D t-J model via series expansions
• Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets