Phase diagram of a magnetic topological nodal semimetal: Stable nodal line in an easy-plane ferromagnet

Yuya Ominato, Ai Yamakage, Kentaro Nomura

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We study a topological phase diagram of a ferromagnetic topological nodal semimetal. We consider a lattice model for three dimensional topological insulators with ferromagnetic ordering. The exchange coupling between the magnetization and the electron spin leads to the nodal band structure. The topology of the nodal band structure depends on the direction of the magnetization and both the Weyl points and the nodal line emerge. We find that the nodal line structure is stable under an easy-plane magnetization in appropriate model parameters. In this case, the nodal line phase emerges as a phase boundary between two topologically distinct Weyl semimetal phases.

Original languageEnglish
Article number114701
Journaljournal of the physical society of japan
Volume88
Issue number11
DOIs
Publication statusPublished - 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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