Magnon crystals and magnetic phases in a Kagom\'e-stripe antiferromagnet

TL;DR

This paper investigates the magnetic properties and phases of a Kagomé-stripe antiferromagnet, revealing a novel magnon crystal phase and providing a comprehensive analysis using numerical and analytical methods.

Contribution

It reports the first observation of an exact magnon crystal phase in a Kagomé-stripe lattice, expanding understanding of magnetic phases in such systems.

Findings

Identification of a new magnon crystal phase

Characterization of magnetic phase diagram

Confirmation of behaviors similar to 2D Kagomé lattice

Abstract

In this work we analyze the magnetization properties of an antiferromagnetic Kagom\'e stripe lattice, motivated by the recent synthesis of materials exhibiting this structure. By employing a variety of techniques that include numerical methods as Density Matrix Renormalization Group and Monte Carlo simulations, as well as analytical techniques, as perturbative low energy effective models and exact solutions, we characterize the magnetization process and magnetic phase diagram of a Kagom\'e stripe lattice. The model captures a variety of behaviors present in the two dimensional Kagom\'e lattice, which are described here by analytical models and numerically corroborated. In addition to the characterization of semiclassical intermediate plateaus, it is worth noting the determination of an exact magnon crystal phase which breaks the underlying symmetry of the lattice. This magnon crystal phase generalizes previous findings and according to our knowledge is reported here for the first time.