NMR evidence of spin supersolid and Pomeranchuk effect behaviors in the triangular-lattice antiferromagnet RbNi(SeO)
arXiv:2603.03703 · doi:10.1088/0256-307X/43/4/040709
Abstract
We performed Rb nuclear magnetic resonance (NMR) measurements on the = 1 bilayer triangular-lattice antiferromagnet RbNi(SeO) in magnetic fields up to 26 T. In the field range from 3 T to 26 T, the NMR spectral lines split and their respective spectral weight ratios reveal the existence of the magnetic up-up-down (UUD) phase, although the 1/3-plateau phase is only reached at fields above 16 T. Two distinct gapless regimes are further identified: one at low fields and low temperatures, and the other at high fields and high temperatures, consistent with the spin supersolid Y and V phases. Notably, the UUD-V phase boundary exhibits a negative slope in , where the supersolid phase is located at temperatures above the solid phase due to strong low-energy spin fluctuations.
Accepted in Chinese Physics Letters
References in corpus (11)
- Unusual ordered phases of highly frustrated magnets: a review
- Giant Magnetocaloric Effect in Spin Supersolid Candidate NaBaCo(PO)
- Physical realization of a quantum spin liquid based on a novel frustration mechanism
- Extended supersolid phase of frustrated hard-core bosons on a triangular lattice
- Supersolid Order of Frustrated Hard-Core Bosons in a Triangular Lattice System
- Continuum excitations in a spin-supersolid on a triangular lattice
- Deconfined Quantum Critical Point: A Review of Progress
- NMR study of supersolid phases in the triangular-lattice antiferromagnet Na2BaCo(PO4)2
- Emergent Berezinskii-Kosterlitz-Thouless and Kugel-Khomskii physics in the triangular lattice bilayer colbaltate
- Thermodynamics of the Hubbard Model on the Bethe Lattice
- Antiferromagnetic Spin Fluctuations and Structural Transition in Cluster Mott Insulator Candidate Nb3Cl8 Revealed by 93Nb- and 35Cl-NMR