Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl${}_3$

Abstract

In solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challenging to control the amount of quantum correlations. We propose and demonstrate a method for active control of the classical-quantum crossover in magnetic insulators by applying external pressure. As a concrete example, we perform high-field, high-pressure measurements on CsCuCl${}_3$, which has the structure of weakly-coupled spin chains. The magnetization process experiences a continuous evolution from the semi-classical realm to the highly-quantum regime with increasing pressure. Based on the idea of "squashing" the spin chains onto a plane, we characterize the change in the quantum correlations by the change in the value of the local spin quantum number of an effective two-dimensional model. This opens a way to access the tunable classical-quantum crossover of two-dimensional spin systems by using alternative systems of coupled-chain compounds.

arXiv comment11 + 3 pages, 10 + 2 figures

References in corpus (41)

• Many-Body Physics with Individually-Controlled Rydberg Atoms
• Quantum Decoherence
• Tools for quantum simulation with ultracold atoms in optical lattices
• Continuous excitations of the triangular-lattice quantum spin liquid YbMgGaO4
• Experimental realization of a 2D fractional quantum spin liquid
• Evidence for a spinon Fermi surface in a triangular lattice quantum spin liquid candidate
• Quantum Magnets under Pressure: Controlling Elementary Excitations in TlCuCl3
• Unusual ordered phases of highly frustrated magnets: a review
• Emergence of non-centrosymmetric topological insulating phase in BiTeI under pressure
• Spin Liquid States on the Triangular and Kagome Lattices: A Projective Symmetry Group Analysis of Schwinger Boson States
• Magnetization Process and Collective Excitations in the S=1/2 Triangular-Lattice Heisenberg Antiferromagnet Ba3CoSb2O9
• Two spin liquid phases in the spatially anisotropic triangular Heisenberg model
• Quantum Phase Diagram of the Triangular-Lattice XXZ Model in a Magnetic Field
• Quantum and classical criticality in a dimerized quantum antiferromagnet
• Quasi two-dimensional antiferromagnet on a triangular lattice RbFe(MoO4)2
• Schwinger Boson Mean Field Theories of Spin Liquid States on Honeycomb Lattice: Projective Symmetry Group Analysis and Critical Field Theory
• A new topological semimetal with iso-energetic Weyl fermions in TaAs under high pressure
• Microscopic Model Calculations for the Magnetization Process of Layered Triangular-Lattice Quantum Antiferromagnets
• Tenth-order high-temperature expansion for the susceptibility and the specific heat of spin-s Heisenberg models with arbitrary exchange patterns: Application to pyrochlore and kagome magnets
• Quantum phase diagram of the $S=1/2$ triangular-lattice antiferromagnet Ba${}_3$CoSb${}_2$O${}_9$
• Spin wave analysis to the spatially-anisotropic Heisenberg antiferromagnet on triangular lattice
• Non-monotonic quantum to classical transition in multiparticle interference
• Magnetic and quantum disordered phases in triangular-lattice Heisenberg antiferromagnets
• Fractionalized excitations in the partially magnetized spin liquid candidate YbMgGaO4
• Magnon breakdown in a two dimensional triangular lattice Heisenberg antiferromagnet of multiferroic LuMnO${}_3$
• Deformed triangular lattice antiferromagnets in a magnetic field: role of spatial anisotropy and Dzyaloshinskii-Moriya interactions
• Multiferroicity in the generic easy-plane triangular lattice antiferromagnet RbFe(MoO4)2
• Direct Observation of the Quantum Phase Transition of SrCu${}_2$(BO${}_3$)${}_2$ by High-Pressure and Terahertz Electron Spin Resonance
• Thermal Hall effect in square-lattice spin liquids: A Schwinger boson mean-field study
• Pressure-tuning the quantum spin Hamiltonian of the triangular lattice antiferromagnet Cs${}_2$CuCl${}_4$
• Variational wave functions for the $S=1/2$ Heisenberg model on the anisotropic triangular lattice: Spin liquids and spiral orders
• Unusual magnetic phases in the strong interaction limit of two-dimensional topological band insulators in transition metal oxides
• Ground-state properties of the triangular-lattice Heisenberg antiferromagnet with arbitrary spin quantum number $s$
• Exact diagonalization and cluster mean-field study of triangular-lattice XXZ antiferromagnets near saturation
• Semiclassical theory of the magnetization process of the triangular lattice Heisenberg model
• Spin liquid phase in a spatially anisotropic frustrated antiferromagnet
• Susceptibility, Magnetization Process and ESR Studies on the Helical Spin System RbCuCl${}_3$
• Magnetic-Field-Induced Polar Phase in Chiral Magnet CsCuCl${}_3$
• Umbrella-coplanar transition in the triangular XXZ model with arbitrary spin
• Development of spin correlations in the geometrically frustrated triangular-lattice Heisenberg antiferromagnet CuCrO2
• New magnetic phases on chiral magenet CsCuCl${}_3$ under high pressures

Cited by in corpus (5)

• Quantum-to-classical crossover in the spin glass dynamics of cavity QED simulators
• Field-orientation dependence of quantum phase transitions in the S=1/2 triangular-lattice antiferromagnet Ba${}_3$CoSb${}_2$O${}_9$
• Magnetic-field and pressure phase diagram of the triangular lattice antiferromagnet CsCuCl${}_3$ clarified by magnetic susceptibility measured with a proximity detector oscillator
• Magnetization process of a quasi-two-dimensional quantum magnet: Two-step symmetry restoration and dimensional reduction
• Spin pumping into quantum spin chains