Helicoidal magnetic order in a clean copper oxide spin chain compound

Abstract

We report susceptibility, specific heat, and neutron diffraction measurements on NaCu${}_2$O${}_2$, a spin-1/2 chain compound isostructural to LiCu${}_2$O${}_2$, which has been extensively investigated. Below 13 K, we find a long-range ordered, incommensurate magnetic helix state with a propagation vector similar to that of LiCu${}_2$O${}_2$. In contrast to the Li analogue, substitutional disorder is negligible in NaCu${}_2$O${}_2$. We can thus rule out that the helix is induced by impurities, as was claimed on the basis of prior work on LiCu${}_2$O${}_2$. A spin Hamiltonian with frustrated longer-range exchange interactions provides a good description of both the ordered state and the paramagnetic susceptibility.

4 pages, 4 figures Improved Fig.1 and 4. Minor rephrasing. Reference added

References in corpus (10)

• Dimerization and Incommensurate Spiral Spin Correlations in the Zigzag Spin Chain: Analogies to the Kondo Lattice
• Thermodynamics of Spin S = 1/2 Antiferromagnetic Uniform and Alternating-Exchange Heisenberg Chains
• Electronic States and Magnetic Propertis of Edge-sharing Cu-O Chains
• Reply to Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• Numerical and approximate analytical results for the frustrated spin-1/2 quantum spin chain
• Reduction of ordered moment and Neel temperature of quasi one-dimensional antiferromagnets Sr2CuO3 and Ca2CuO3
• NMR and LDA evidence for spiral magnetic order in the chain cuprate LiCu2O2
• Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• Coexistence of dimerization and long-range magnetic order in the quantum antiferromagnetic compound LiCu2O2: inelastic light scattering study
• Oxygen Moment Formation and Canting in Li2CuO2

Cited by in corpus (42)

• Correlation between spin helicity and electric polarization vector in quantum-spin chain magnet LiCu${}_2$O${}_2$
• Resonant Elastic Soft X-Ray Scattering
• Zigzag spin chains with antiferromagnetic-ferromagnetic interactions: Transfer-matrix renormalization group study
• Zig-zag ladders with staggered magnetic chirality in S = 3/2 compound beta-CaCr2O4
• Multiferroicity in the spin-1/2 quantum matter of LiCu2O2
• Thermodynamic Properties of the Anisotropic Frustrated Spin-chain Compound Linarite PbCuSO${}_4$(OH)${}_2$
• Exact one- and two-particle excitation spectra of acute-angle helimagnets above their saturation magnetic field
• Magnetic properties of the antiferromagnetic spin-1/2 chain system $\beta$-TeVO${}_4$
• Influence of an inter-chain coupling on spiral ground-state correlations in frustrated spin-1/2 J1-J2 Heisenberg chains
• Quantum Fluctuations of Chirality in One-Dimensional Spin-1/2 Multiferroics: Gapless Dielectric Response from Phasons and Chiral Solitons
• Quasi-one-dimensional antiferromagnetism and multiferroicity in CuCrO${}_4$
• The strength of frustration and quantum fluctuations in LiVCuO4
• Magnetic structure of the edge-sharing copper oxide chain compound NaCu2O2
• Ca2Y2Cu5O10: the first frustrated quasi-1D ferromagnet close to criticality
• Characterization of the Spin-1/2 Linear-Chain Ferromagnet CuAs${}_2$O${}_4$
• Electronic structure, magnetic and dielectric properties of the edge-sharing copper-oxide chain compound NaCu${}_2$O${}_2$
• Domain-wall excitons and optical conductivity in one-dimensional Wigner lattices
• Electronic structure and magnetic properties of Li_2ZrCuO_4 - a spin 1/2 Heisenberg system in vicinity to a quantum critical point
• Spin polarization of the magnetic spiral in NaCu_2O_2, as seen by NMR
• Dynamical magnetoelectric effects induced by the Dzyaloshinskii-Moriya interaction in multiferroics
• Is solid copper oxalate a spin chain or a mixture of entangled spin pairs?
• Spin exchange dominated by charge fluctuations of the Wigner lattice in the newly synthesized chain cuprate Na5Cu3O6
• Spiral ground state in the quasi-two-dimensional spin-1/2 system Cu2GeO4
• Magnetic crossover and complex excitation spectrum of the ferromagnetic/antiferromagnetic spin-1/2 chain system alpha-TeVO4
• Spin-dependent diffraction at ferromagnetic/spin spiral interface
• Electronic structure of KTi(SO4)2.H2O - a S=1/2 frustrated chain antiferromagnet
• Magnetic excitations and phonons in the spin-chain compound NaCu2O2
• Li non-stoichiometry and crystal growth of untwinned 1D quantum spin system Lix Cu2 O2
• Incommensurate spin density modulation in a copper-oxide chain compound with commensurate charge order
• Low-temperature properties of classical zigzag spin chain at the ferromagnet-helimagnet transition point
• Effective spin-spin interactions in bilayers of Rydberg atoms and polar molecules
• Magnetic solitons in frustrated ferromagnetic spin chain
• Incommensurate magnetism in K${}_2$MnS${}_{2-x}$Se${}_x$ and prospects for tunable frustration in a triangular lattice of pseudo-1D spin chains
• Quasi-one-dimensional uniform spin-$\frac{1}{2}$ Heisenberg antiferromagnet KNaCuP${}_2$O${}_7$ probed by ${}^{31}$P and ${}^{23}$Na NMR
• Thermal conductivity of pure and Zn-doped LiCu_2O_2 single crystals
• Triplet Dimerization Crossover Driven by Magnetic Frustration in In2VO5
• Bond distortion effects and electric orders in spiral multiferroic magnets
• Coupled Spin-Phonon Excitations in Helical Multiferroics
• Magnetism of one-dimensional Wigner lattices and its impact on charge order
• Low-temperature thermodynamics of the classical frustrated ferromagnetic chain in magnetic field
• Anisotropic optical response of the mixed-valent Mott-Hubbard insulator NaCu2O2
• Observation of a gapped phase in the one-dimensional $S=\frac{1}{2}$ Heisenberg antiferromagnetic chain Cu(Ampy)ClBr