Neutron diffraction in a novel a triangular lattice antiferromagnet MnSnB2O6

The subtle interplay between competing degrees of freedom and frustration induced quantum fluctuations can lead to novel states in quantum materials. Quantum spin liquid (QSL) is a highly entangled state of matter that lacks magnetic order, despite strong interactions between magnetic moments and offer an ideal platform to host exotic fractional excitations. Unfortunately, anti-site disorder and defects place major constraints on the realization of ideal QSLs in real materials. Triangular lattice antiferromagnet (TLAFM) offers the simplest archetype for realizing QSL state in frustrated magnets. Here, we focus on a novel TLAFM MnSnB2O6, wherein Mn2+ ions constitute a perfect two-dimensional lattice. Our thermodynamic results don’t show any signature of magnetic ordering or spin-freezing down to 1.9 K. Our recent zero field μSR experiment at ISIS (RB 2220694) reveals a signature of magnetic ordering below 1.2 K, which need further investigation We propose to carry out neutron powder diffraction measurements on the WISH instrument at sub-kelvin temperatures with aim to verify the magnetic order. The proposed measurements should enable us to unveil the exact magnetic structure and any short-range spin correlations developing in this material at low temperatures via diffuse neutron scattering.