Hybridization and Decay of Magnetic Excitations in two-dimensional Triangular Lattice Antiferromagnets

Abstract

Elementary quasiparticles in solids such as phonons and magnons occasionally have nontrivial interactions between them, as well as among themselves. As a result, their energy eigenvalues are renormalized, the quasiparticles spontaneously decay into a multi-particle continuum state, or they are hybridized with each other when their energies are close. As discussed in this review, such anomalous features can appear dominantly in quantum magnets but are not, a priori, negligible for magnetic systems with larger spin values and noncollinear magnetic structures. We review the unconventional magnetic excitations in two-dimensional triangular lattice antiferromagnets and discuss their implications on related issues.

arXiv comment18 pages, 9 figures

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Cited by in corpus (12)

• Spin liquids in geometrically perfect triangular antiferromagnets
• Decay and renormalization of a longitudinal mode in a quasi-two-dimensional antiferromagnet
• Tunable topological magnon-polaron states and anomalous Hall phenomena in two-dimensional ferromagnetic insulators
• Thermal Hall effect incorporating magnon damping in localized spin systems
• Diagonal and off-diagonal thermal conduction with resonant phonon scattering in $N{i}_{3}Te{O}_6$
• Sizable suppression of magnon Hall effect by magnon damping in Cr${}_2$Ge${}_2$Te${}_6$
• Spin-orbit coupling effects on spin-phonon coupling in Cd2Os2O7
• Momentum-dependent magnon lifetime in the metallic non-collinear triangular antiferromagnet CrB2
• Exchange striction induced thermal Hall effect in van der Waals antiferromagnet MnPS${}_3$
• Spin-lattice interaction parameters from first principles: theory and implementation
• Multiple magnon modes in spin-1/2 Heisenberg antiferromagnet on simple square lattice in strong magnetic field
• Calculating spin-lattice interactions in ferro- and antiferromagnets: the role of symmetry, dimension and frustration