Mixed Phases for the t-J Model

TL;DR

This paper investigates the phase competition in the t-J model, revealing a stable mixed phase with both flux and RVB order parameters across various temperatures and dopings.

Contribution

It introduces a finite temperature phase diagram showing the coexistence of flux and RVB states in the t-J model, highlighting a novel stable mixed phase.

Findings

Stable mixed phase with flux and RVB parameters at various temperatures and dopings

Finite temperature phase diagram for the t-J model

Identification of conditions favoring non-magnetic states

Abstract

We study the competition between non-magnetic (dimer or flux) states and short-range antiferromagnetically ordered RVB states in the t-J model and present a finite temperature phase diagram. We show that, for a wide range of temperatures and dopings, the stable phase results to be a state in which both the flux and the RVB parameters are nonzero.