Complex magnetic phases enriched by charge density waves in topological semimetals GdSb_xTe_{2-x-{\delta}}

TL;DR

This study explores the complex magnetic phases in GdSb_xTe_{2-x-δ} topological semimetals, revealing multiple magnetic states and potential antiferromagnetic skyrmion phases influenced by charge density waves.

Contribution

It provides the first detailed magnetic phase diagrams of GdSb_xTe_{2-x-δ} and suggests the possible existence of an antiferromagnetic skyrmion phase in bulk material.

Findings

Multiple magnetic phases identified in charge density wave materials.

Evidence suggesting the existence of an antiferromagnetic skyrmion phase.

Magnetic phase diagrams mapped along three crystallographic orientations.

Abstract

The interplay of crystal symmetry, magnetism, band topology and electronic correlation can be the origin of quantum phase transitions in condensed matter. Particularly, square-lattice materials have been serving as a versatile platform to study the rich phenomena resulting from that interplay. In this work, we report a detailed magnetic study on the square-lattice based magnetic topological semimetals GdSb_{x}Te_{2-x-{\delta}}. We report the H-T magnetic phase diagrams along three crystallographic orientations and show that, for those materials where a charge density wave distortion is known to exist, many different magnetic phases are identified. In addition, the data provides a clue to the existence of an antiferromagnetic skyrmion phase, which has been theoretically predicted but not experimentally confirmed in a bulk material yet.