Extended quantum critical phase in a magnetized spin-1/2 antiferromagnetic chain

Abstract

Measurements are reported of the magnetic field dependence of excitations in the quantum critical state of the spin S=1/2 linear chain Heisenberg antiferromagnet copper pyrazine dinitrate (CuPzN). The complete spectrum was measured at k_B T/J <= 0.025 for H=0 and H=8.7 Tesla where the system is ~30% magnetized. At H=0, the results are in quantitative agreement with exact calculations of the dynamic spin correlation function for a two-spinon continuum. At high magnetic field, there are multiple overlapping continua with incommensurate soft modes. The boundaries of these continua confirm long-standing predictions, and the intensities are consistent with exact diagonalization and Bethe Ansatz calculations.

4 pages, 4 figures

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• Critical properties of the one-dimensional spin-1/2 antiferromagnetic Heisenberg model in the presence of a uniform field
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Cited by in corpus (87)

• One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm
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• Computation of dynamical correlation functions of Heisenberg chains in a field
• Spectral functions in one-dimensional quantum systems at T>0
• Computation of dynamical correlation functions of Heisenberg chains: the gapless anisotropic regime
• Experimental Observation of Bethe Strings
• Exact edge singularities and dynamical correlations in spin-1/2 chains
• The 4-spinon dynamical structure factor of the Heisenberg chain
• Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder
• Magnetocaloric effect and magnetic cooling near a field-induced quantum-critical point
• Dynamical structure factor at small q for the XXZ spin-1/2 chain
• Cavity-Heisenberg spin chain quantum battery
• Quantum spin liquid in frustrated one dimensional LiCuSbO4
• Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate
• Molecular Quantum Magnetism in LiZn2Mo3O8
• Excitation hierarchy of the quantum sine-Gordon spin chain in strong magnetic field
• Direct observation of incommensurate magnetism in Hubbard chains
• Magnetothermal transport in the spin-1/2 chains of copper pyrazine dinitrate
• Modes of magnetic resonance in the spin liquid phase of Cs2CuCl4
• Precise evaluation of thermal response functions by optimized density matrix renormalization group schemes
• Quantum criticality in the spin-$1/2$ Heisenberg chain system copper pyrazine dinitrate
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• Hierarchy of exchange interactions in the triangular-lattice spin-liquid YbMgGaO${}_4$
• Symmetric and asymmetric excitations of a strong-leg quantum spin ladder
• Dispersions of Many-Body Bethe strings
• Quantum Critical Dynamics of a Heisenberg-Ising Chain in a Longitudinal Field: Many-Body Strings versus Fractional Excitations
• Longitudinal Magnetic Dynamics and Dimensional Crossover in the Quasi-One-Dimensional, Spin-1/2, Heisenberg Antiferromagnet KCuF3
• Electron Spin Resonance in sine-Gordon spin chains in the perturbative spinon regime
• Finite Temperature Dynamical Structure Factor of Alternating Heisenberg Chains
• Dynamical signatures of quasiparticle interactions in quantum spin chains
• Continuum excitations in a spin-supersolid on a triangular lattice
• Spin diffusion in the low-dimensional molecular quantum Heisenberg antiferromagnet Cu(pyz)(NO${}_3$)${}_2$ detected with implanted muons
• Neutron scattering evidence for isolated spin-1/2 ladders in (C${}_5$D${}_{12}$N)${}_2$CuBr${}_4$
• Evaluation of Dynamic spin structure factor for the spin-1/2 XXZ chain in a magnetic field
• Quantum critical dynamics of a S = 1/2 antiferromagnetic Heisenberg chain studied by 13C-NMR spectroscopy
• Magnetism of CuX2 frustrated chains (X = F, Cl, Br): the role of covalency
• Giant spin canting in the S = 1/2 antiferromagnetic chain [CuPM(NO3)2(H2O)2]n observed by 13C-NMR
• One-dimensional Quantum Spin Dynamics of Bethe String States
• High-field magnetization study of the S = 1/2 antiferromagnetic Heisenberg chain [PM Cu(NO${}_3$)${}_2$(H${}_2$O)${}_2$]${}_n$ with a field-induced gap
• Some experimental tests of Tomonaga-Luttinger liquids
• Quantum Monte Carlo studies of spinons in one-dimensional spin systems
• Dynamics of a Heisenberg spin chain in the quantum critical regime: NMR experiment versus effective field theory
• Superposition of ferromagnetic and antiferromagnetic spin chains in the quantum magnet BaAg2Cu[VO4]2
• Neutron scattering from a coordination polymer quantum paramagnet
• Spin-Dynamics of the antiferromagnetic S=1/2-Chain at finite magnetic Fields and intermediate Temperatures
• Doping dependence of magnetic excitations of 1D cuprates as probed by Resonant Inelastic x-ray Scattering
• Field-Induced Gap in a Quantum Spin-1/2 Chain in a Strong Magnetic Field
• Crystals for neutron scattering studies of quantum magnetism
• Quantum criticality of spinons
• Heat Transport in Spin Chains with Weak Spin-Phonon Coupling
• The S=1/2 chain in a staggered field: High-energy bound-spinon state and the effects of a discrete lattice
• Quantum Critical Scaling for a Heisenberg Spin-$1/2$ Chain around Saturation
• Exact diagonalization study of the Hubbard-parametrized four-spin ring exchange model on a square lattice
• Phase diagram and spin Hamiltonian of weakly-coupled anisotropic S=1/2 chains in CuCl2*2((CD3)2SO)
• Cluster mean field study of the Heisenberg model for CuInVO${}_5$
• A glimpse of a Luttinger liquid
• Pseudoparticle approach to 1D integrable quantum models
• Finite-temperature scaling of spin correlations in a partially magnetized Heisenberg $S=1/2$ chain
• Experimental observation of repulsively bound magnons
• Antiferromagnetic spin-1/2 chains in (NO)Cu(NO3)3: a microscopic study
• Dynamical properties of the sine-Gordon quantum spin magnet Cu-PM at zero and finite temperature
• Electron Spin Resonance of the Interacting Spinon Liquid
• Dimensional crossover of spin chains in a transverse staggered field: an NMR study
• On singularities of dynamic response functions in the massless regime of the XXZ spin-1/2 chain
• Wannier states and spin supersolid physics in the triangular antiferromagnet K${}_2$Co(SeO${}_3$)${}_2$
• Confinement of fractional excitations in a triangular lattice antiferromagnet
• Noise in tunneling spin current across coupled quantum spin chains
• Dynamics of the two-dimensional S=1/2 dimer system (C5H6N2F)2CuCl4
• Synthesis and structural characterization of 2Dioxane.2H2O.CuCl2: metal-organic compound with Heisenberg antiferromagnetic S=1/2 chains
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• From one- to two-magnon excitations in the S=3/2 magnet $\beta$-CaCr${}_2$O${}_4$
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• Dynamical structure factors of the spin-1/2 XXX chain at finite magnetic field
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• Hydrodynamics of interacting spinons in the magnetized spin-$1/2$ chain with the uniform Dzyaloshinskii-Moriya interaction
• Bethe strings in the dynamical structure factor of the spin-1/2 Heisenberg XXX chain
• Low frequency spin dynamics in the quantum magnet copper pyrazine dinitrate
• Longitudinal Magnetization and specific heat of the anisotropic Heisenberg antiferromagnet on Honeycomb lattice
• Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb${}_2$O${}_6$
• Quasiparticles of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in a magnetic field
• Emulation of quantum correlations by classical dynamics in a spin-1/2 Heisenberg chain
• Bethe strings in the spin dynamical structure factor of the Mott-Hubbard phase in one-dimensional fermionic Hubbard model
• Spin Seebeck effect of interacting spinons
• Observation of spin-conserving two-spinon continuum in the $S$=1/2 antiferromagnetic chain system Sr${}_2$CuO${}_3$ using Cu $K$-edge resonant inelastic x-ray scattering
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