Induced quantum magnetism on a triangular lattice of non-Kramers ions in PrMgAl11O19

Abstract

We report the magnetic properties of the quantum triangular lattice antiferromagnet (TLAF) PrMgAl11O19 through magnetization and specific heat measurements. Strong magnetic anisotropy indicates the realization of an Ising-like magnetism in PrMgAl11O19 single crystal while no long-range magnetic ordering is realized down to 0.4 K. The splitting of the low-lying quasi-doublet into two singlets suggested by experimental data, is consistent with an effective pseudospin-1/2 scenario. The observed gapless excitations in zero field are attributed to induced quantum magnetism, they would be induced by magnetic interactions of an energy scale comparable with the splitting between the two singlets. Based on these results, we modeled the magnetic ground state of PrMgAl11O19 by a quantum Ising magnet with an intrinsic transverse field rather than a quantum spin liquid (QSL). In addition, our data show a non-monotonous response of the low-temperature specific heat to the external fields revealing a complex interplay between intrinsic and external magnetic fields.

References in corpus (32)

• Quantum Spin Liquids
• Ising models of quantum frustration
• Rare-earth chalcogenides: A large family of triangular lattice spin liquid candidate
• Quantum Phase Diagram of the Triangular-Lattice XXZ Model in a Magnetic Field
• PyCrystalField: Software for Calculation, Analysis, and Fitting of Crystal Electric Field Hamiltonians
• Quantum spin liquid in the Ising triangular-lattice antiferromagnet neodymium heptatantalate
• Kosterlitz-Thouless Melting of Magnetic Order in the Triangular Quantum Ising Material TmMgGaO${}_4$
• A Class of Compounds Featuring Frustrated Triangular Magnetic Lattice CsRESe${}_2$ (RE=La-Lu): Quantum Spin-Liquid Candidates
• Spin liquids in geometrically perfect triangular antiferromagnets
• Intertwined dipolar and multipolar order in the triangular-lattice magnet TmMgGaO${}_4$
• Evidence of the Berezinskii-Kosterlitz-Thouless Phase in a Frustrated Magnet
• Antiferro Quadrupole Orders in Non-Kramers Doublet Systems
• Selective measurements of intertwined multipolar orders: non-Kramers doublets on a triangular lattice
• Partial up-up-down order with the continuously distributed order parameter in the triangular antiferromagnet TmMgGaO4
• Absence of zero-point entropy in a triangular Ising antiferromagnet
• Intrinsic quantum Ising model on a triangular lattice magnet TmMgGaO${}_4$ and beyond
• Quantum dynamics of topological strings in a frustrated Ising antiferromagnet
• Gapless triangular-lattice spin-liquid candidate in PrZnAl${}_{11}$O${}_{19}$
• A case study of spin-$1$ Heisenberg model in a triangular lattice
• Intrinsic transverse field in frustrated quantum Ising magnets: its physical origin and quantum effects
• String Picture of a Frustrated Quantum Magnet and Dimer Model
• Gapped ground state in the zigzag pseudospin-1/2 quantum antiferromagnetic chain compound PrTiNbO6
• Exchange renormalized crystal field excitation in a quantum Ising magnet KTmSe${}_2$
• Ising-type quantum spin liquid state in PrMgAl${}_{11}$O${}_{19}$
• Phase diagrams and excitations of anisotropic $S=1$ quantum magnets on the triangular lattice
• Synthesis, disorder and Ising anisotropy in a new spin liquid candidate PrMgAl${}_{11}$O${}_{19}$
• Excitation Spectrum and Spin Hamiltonian of the Frustrated Quantum Ising Magnet Pr${}_3$BWO${}_9$
• Induced quantum magnetism in CEF singlet ground state models: Thermodynamics and excitations
• Field-Tuned Quantum Effects in a Triangular-Lattice Ising Magnet
• Multiple-$q$ dipole-quadrupole instability in spin-1 triangular-lattice systems
• Quadrupolar Susceptibility and Magnetic Phase Diagram of PrNi${}_2$Cd${}_{20}$ with Non-Kramers Doublet Ground State
• Emergent transverse-field Ising model in ${\mathbf{d}}^4$ spin-orbit Mott insulators

Cited by in corpus (2)

• Crystal-Field--Driven Magnetoelectricity in the Triangular Quantum Magnet CeMgAl${}_{11}$O${}_{19}$
• Crystal-Field--Driven Magnetoelectric Coupling in the Non-Kramers Hexaaluminate PrMgAl11O19