Quantum melting of the long-range antiferromagnetic order and spin-wave condensation in t-J-V model

TL;DR

This paper investigates the effects of hole doping in a two-dimensional t-J-V model, showing that it leads to spin-wave condensation, destruction of antiferromagnetic order, and a gap in the spectrum.

Contribution

It introduces a ground state wave function for the model and demonstrates the phenomena caused by doping, highlighting the quantum melting of magnetic order.

Findings

Doping causes spin-wave condensation.

Long-range antiferromagnetic order is destroyed.

A gap appears in the spin-wave spectrum.

Abstract

We consider two-dimensional t-J-V model. The wave function of the ground state is constructed. We demonstrate that the doping by holes results in condensation of the spin-waves, destruction of the long-range antiferromagnetic order and formation of the gap in the spin-wave spectrum.