Spin-charge separation in the single hole doped Mott antiferromagnet

Abstract

The motion of a single hole in a Mott antiferromagnet is investigated based on the t-J model. An exact expression of the energy spectrum is obtained, in which the irreparable phase string effect [Phys. Rev. Lett. 77, 5102 (1996)] is explicitly present. By identifying the phase string effect with spin backflow, we point out that spin-charge separation must exist in such a system: the doped hole has to decay into a neutral spinon and a spinless holon, together with the phase string. We show that while the spinon remains coherent, the holon motion is deterred by the phase string, resulting in its localization in space. We calculate the electron spectral function which explains the line shape of the spectral function as well as the ``quasiparticle'' spectrum observed in angle-resolved photoemission experiments. Other analytic and numerical approaches are discussed based on the present framework.

16 pages, 9 figures; references updated; to appear in Phys. Rev. B

References in corpus (2)

• Indications of Spin-Charge Separation in the 2D Extended t-J Model
• Spin Liquid State around a Doped Hole in Insulating Cuprates

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• Strong correlation induced charge localization in antiferromagnets
• Theory of high energy features in angle-resolved photo-emission spectra of hole-doped cuprates
• Universality of the Electronic Structure from a Half Filled CuO_2 Plane
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• Single-hole wave function in two dimensions: A case study of the doped Mott insulator
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• Nature of a single doped hole in two-leg Hubbard and $t$-$J$ ladders
• Holes as Dipoles in a Doped Antiferromagnet and Stripe Instabilities
• Phenomenological Single-Particle Green's Function for the Pseudogap and Superconducting Phases of High-T${}_c$ Cuprates
• Self-localization of holes in a lightly doped Mott insulator
• Spectral function of the electron in a superconducting RVB state
• Monopoles, confinement and charge localization in the t-J model with dilute holes
• Ginzburg-Landau Expansion in Non-Fermi Liquid Superconductors: Effect of the Mass Renormalization Factor
• Single-hole dynamics in the t-J model
• An Emergent World of Gauge Force and Partons
• Effect of phase string on single-hole dynamics in the two-leg Hubbard ladder