Pseudo-Goldstone Magnons in the Frustrated S=3/2 Heisenberg Helimagnet ZnCr2Se4 with a Pyrochlore Magnetic Sublattice

2017/05/31 by Y. V. Tymoshenko, Y. V. Tymoshenko, Y. A. Onykiienko +21 · 25 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Class (philosophy) #Heisenberg model #Magnetic moment #Magnon #Multiferroics and related materials #Pyrochlore #Spin wave #Topological Materials and Phenomena #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevx.7.041049

published in Physical Review X 7(4) (American Physical Society) · V3: Final version to be published in Phys. Rev. X

openalex created_date 2017/05/26 · arxiv created 2017/10/05 · openalex publication_date 2017/11/29 · arxiv updated 2017/12/01 · openalex updated_date 2026/08/05

Abstract

Wave excitations (magnons) along the helical arrangement of magnetic moments in helimagnets generally travel along this helix, while orthogonal magnons are thought to require much higher energy. New experiments reveal the existence of low-energy orthogonal magnons that could lead to a new understanding of a broad class of magnetic materials.

Citations

• Spin-phonon coupling in antiferromagnetic chromium spinels
• Spin–lattice instability to a fractional magnetization state in the spinel HgCr2O4
• Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4revisited by small-angle neutron scattering