# Quantum phase transitions of a generalized compass chain with staggered Dzyaloshinskii-Moriya interaction

## TL;DR

This paper investigates quantum phase transitions in a one-dimensional compass model with staggered Dzyaloshinskii-Moriya interactions under a transverse magnetic field, revealing critical properties and thermodynamic behaviors.

## Contribution

It provides an exact solution for the model, analyzing the effects of Dzyaloshinskii-Moriya interactions and magnetic field on phase transitions and thermodynamics.

## Key findings

- Identified critical points and phase boundaries.
- Demonstrated universal scaling of entropy and specific heat.
- Analyzed the influence of staggered Dzyaloshinskii-Moriya interactions.

## Abstract

We consider a class of one-dimensional compass models with staggered Dzyaloshinskii-Moriya exchange interactions in an external transverse magnetic field. Based on the exact solution derived from Jordan-Wigner approach, we study the excitation gap, energy spectra, spin correlations and critical properties at phase transitions. We explore mutual effects of the staggered Dzyaloshinskii-Moriya interaction and the magnetic field on the energy spectra and the ground-state phase diagram. Thermodynamic quantities including the entropy and the specific heat are discussed, and their universal scalings at low temperature are demonstrated.