Magnon Interference Tunneling Spectroscopy as a Probe of 2D Magnetism

Abstract

Probing two-dimensional single-layer quantum magnets remains a significant challenge. In this letter, we propose exploiting tunneling spectroscopy in the presence of magnetic impurities to obtain information about the magnon dispersion relations in analogy to quasiparticle interference in non-magnetic materials. We show this technique can be used to establish the dispersion relations even for frustrated magnets, where the presence of an impurity generally leads to a nontrivial spin texture. Finally, we consider the problem of establishing Chern magnon bands in 2D magnets showing how tuneable impurities allow probing the nature of the surface states.

6 pages, 4 figures (main) + 20 pages, 11 figures (supplement)

References in corpus (7)

• Magnetic 2D materials and heterostructures
• Atomically Thin CrCl3: An in-Plane Layered Antiferromagnetic Insulator
• Topological Magnons: A Review
• Imaging spinon density modulations in a 2D quantum spin liquid
• Electron Cotunneling into a Kondo Lattice
• STM as a single Majorana detector of Kitaev's chiral spin liquid
• Tuneable electron-magnon coupling of ferromagnetic surface states in PdCoO${}_2$

Cited by in corpus (5)

• Probing quantum spin liquids with a quantum twisting microscope
• Identifying, and constructing, complex magnon band topology
• Visualization of moiré magnons in monolayer ferromagnet
• Local spin-flip transitions induced by magnetic quantum impurities in two-dimensional magnets
• Quasiparticle interference in LiFeAs: Signature of inelastic tunneling through spin fluctuations