Field-induced Bose-Einstein condensation and supersolid in the two-dimensional Kondo necklace

Abstract

The application of an external magnetic field of sufficient strength to a spin system composed of a localized singlet can overcome the energy gap and trigger bosonic condensation and so provide an alternative method to realize exotic phases of matter in real materials. Previous research has indicated that a spin Hamiltonian with on-site Kondo coupling may be the effective many-body Hamiltonian for ${\text{Ba}}_2{\text{NiO}}_2{\text{(AgSe)}}_2$ (BNOAS) and here we study such a Hamiltonian using a tensor network ansatz in two dimensions. Our results unveil a phase diagram which indicates the underlying phases of BNOAS. We propose, in response to the possible doping-induced superconductivity of BNOAS, a fermionic model for further investigation. We hope that our discovery can bring up further interest in both theoretical and experimental researches for related nickelate compounds.

11 pages, 6 figures, 2 tables

References in corpus (15)

• Classical simulation of infinite-size quantum lattice systems in two spatial dimensions
• Bose-Einstein Condensation in Magnetic Insulators
• Observation of the supersolid stripe phase in spin-orbit coupled Bose-Einstein condensates
• Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3
• Transient supersolid properties in an array of dipolar quantum droplets
• Long-lived and transient supersolid behaviors in dipolar quantum gases
• Self-doped Mott insulator for parent compounds of nickelate superconductors
• Supersolid phase induced by correlated hopping in spin-1/2 frustrated quantum magnets
• Quantum and thermal transitions out of the supersolid phase of a 2D quantum antiferromagnet
• Supersolid phase in spin dimer XXZ systems under magnetic field
• Theory of the field-induced BEC in the frustrated spin-1/2 dimer compound BaCuSi2O6
• Magnetic field-induced one-magnon Raman scattering in the magnon Bose-Einstein condensation phase of TlCuCl${}_3$
• Mechanisms for Spin-Supersolidity in S=1/2 Spin-Dimer Antiferromagnets
• Thermodynamics of the coupled spin-dimer system TlCuCl3 close to a quantum phase transition
• Proposed ordering of textured spin singlets in a bulk infinite layer nickelate

Cited by in corpus (6)

• Low Valence Nickelates: Launching the Nickel Age of Superconductivity
• Generating function for projected entangled-pair states
• Variational Tensor Network Operator
• Cubic ferromagnet and emergent $U(1)$ symmetry on its phase boundary
• Realization of a triangular spin necklace in a verdazyl-based Ni complex
• Programmable order by disorder effect and underlying phases through dipolar quantum simulators