Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4 revisited by small-angle neutron scattering

Abstract

We performed small-angle neutron scattering (SANS) measurements on the helimagnetic spinel compound ZnCr2Se4. The ground state of this material is a multi-domain spin-spiral phase, which undergoes domain selection in a magnetic field and reportedly exhibits a transition to a proposed spin-nematic phase at higher fields. We observed a continuous change in the magnetic structure as a function of field and temperature, as well as a weak discontinuous jump in the spiral pitch across the domain-selection transition upon increasing field. From our SANS results we have established the absence of any long-range magnetic order in the high-field (spin-nematic) phase. We also found that all the observed phase transitions are surprisingly isotropic with respect to the field direction.

References in corpus (2)

• New high magnetic field phase of the frustrated $S=1/2$ chain compound LiCuVO${}_4$
• Spin-driven Phase Transitions in ZnCr${}_2$Se${}_4$ and ZnCr${}_2$S${}_4$ Probed by High Resolution Synchrotron X-ray and Neutron Powder Diffraction

Cited by in corpus (12)

• Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8
• Pseudo-Goldstone magnons in the frustrated S=3/2 Heisenberg helimagnet ZnCr2Se4 with a pyrochlore magnetic sublattice
• Magnetic-field dependence of low-energy magnons, anisotropic heat conduction, and spontaneous relaxation of magnetic domains in the cubic helimagnet ZnCr2Se4
• Structure and Magnetism in the Bond Frustrated Spinel, ZnCr2Se4
• Magnetic-field-induced incommensurate to collinear spin order transition in NiBr${}_2$
• Line-Graph Approach to Spiral Spin Liquids
• On the complexity of spinels: Magnetic, electronic, and polar ground states
• Phase Diagram of a Spin-ice Kondo Lattice Model in a Breathing Pyrochlore Lattice
• Anomalous quasielastic scattering contribution in the centrosymmetric multi-$\mathbf{q}$ helimagnet SrFeO${}_3$
• One-third magnetization plateau in a spin-1 kagome magnet BaNi${}_3$(AsO${}_4$)${}_2$(OH)${}_2$
• Magnetism of single crystalline breathing pyrochlore spinel AgInCr4S8
• Contrasting magnetic behavior in MnSc_2X_4 (X = S, Se) spinel compounds investigated by magnetoelastic studies