Quasi-one-dimensional magnetism in the spin-$\frac{1}{2}$ antiferromagnet BaNa${}_2$Cu(VO${}_4$)${}_2$

Abstract

We report synthesis and magnetic properties of quasi-one-dimensional spin-$\frac{1}{2}$ Heisenberg antiferromagnetic chain compound BaNa${}_2$Cu(VO${}_4$)${}_2$. This orthovanadate has a centrosymmetric crystal structure, $C2/c$, where the magnetic Cu${}^{2+}$ ions form spin chains. These chains are arranged in layers, with the chain direction changing by 62${}^0$ between the two successive layers. Alternatively, the spin lattice can be viewed as anisotropic triangular layers upon taking the inter-chain interactions into consideration. Despite this potential structural complexity, temperature-dependent magnetic susceptibility, heat capacity, ESR intensity, and NMR shift agree well with the uniform spin-$1/2$ Heisenberg chain model with an intrachain coupling of $J/k_{\mathrm{B}}\simeq 5.6$ K. The saturation field obtained from the magnetic isotherm measurement consistently reproduces the value of $J/k_{\mathrm{B}}$. Further, the ${}^{51}$V NMR spin-lattice relaxation rate mimics the 1D character in the intermediate temperature range, whereas magnetic long-range order sets in below $T_{\mathrm{N}}\simeq 0.25$ K. The effective interchain coupling is estimated to be $J_{\perp }/k_{\mathrm{B}}\simeq 0.1$ K. The theoretical estimation of exchange couplings using band-structure calculations reciprocate our experimental findings and unambiguously establish the 1D character of the compound. Finally, the spin lattice of BaNa${}_2$Cu(VO${}_4$)${}_2$ is compared with the chemically similar but not isostructural compound BaAg${}_2$Cu(VO${}_4{)}_2$.

arXiv comment12 pages, 11 figures, 1 table, Phys. Rev. B (accepted)

References in corpus (33)

• The ALPS project release 1.3: open source software for strongly correlated systems
• Predicting the Spin-Lattice Order of Frustrated Systems from First-Principles
• Susceptibility of the Spin 1/2 Heisenberg Antiferromagnetic Chain
• Dynamics of coupled quantum spin chains
• Cluster algorithms for general-S quantum spin systems
• Generalized Directed Loop Method for Quantum Monte Carlo Simulations
• Neel Temperature of Quasi-Low-Dimensional Heisenberg Antiferromagnets
• Reduction of ordered moment and Neel temperature of quasi one-dimensional antiferromagnets Sr2CuO3 and Ca2CuO3
• The spin-1/2 Heisenberg chain: thermodynamics, quantum criticality and spin-Peierls exponents
• Chiral order and electromagnetic dynamics in one-dimensional multiferroic cuprates
• Specific heat and high-temperature series of lattice models: interpolation scheme and examples on quantum spin systems in one and two dimensions
• Magnetic order in the quasi-one-dimensional spin 1/2 chain, copper pyrazine dinitrate
• NMR relaxation in half-integer antiferromagnetic spin chains
• Anisotropic pyrochlores and the global phase diagram of the checkerboard antiferromagnet
• Evidence of a single nonmagnetic Co3+ state in the Na1CoO2 cobaltate
• Study of one-dimensional nature of (Sr,Ba)_2Cu(PO_4)_2 and BaCuP_2O_7 via 31P NMR
• Nuclear magnetic resonance in the heavy fermion superconductors
• The spin gap in malachite Cu2(OH)2CO3 and its evolution under pressure
• The frustrated Heisenberg antiferromagnet on the checkerboard lattice: the $J_1$--$J_2$ model
• Spinons in a Crossed-Chains Model of a 2D Spin Liquid
• NMR relaxation rates for the spin-1/2 Heisenberg chain
• Commensurate and incommensurate magnetic order in spin-1 chains stacked on the triangular lattice in Li${}_2$NiW${}_2$O${}_8$
• 1-Dimensional behavior and sliding Luttinger liquid phase in a frustrated spin-1/2 crossed chain model: contribution of exact diagonalizations
• Frustrated couplings between alternating spin-1/2 chains in AgVOAsO4
• Hindered magnetic order from mixed dimensionalities in CuP${}_2$O${}_6$
• Electronic and magnetic properties of K${}_2$CuP${}_2$O${}_7$ - a model S=1/2 Heisenberg chain system
• Magnetic model for A2CuP2O7 (A = Na, Li) revisited: 1D versus 2D behavior
• Characterization of the Spin-1/2 Linear-Chain Ferromagnet CuAs${}_2$O${}_4$
• Superposition of ferromagnetic and antiferromagnetic spin chains in the quantum magnet BaAg2Cu[VO4]2
• On the valence-bond solid phase of the crossed-chain quantum spin model
• CaCu2(SeO3)2Cl2: spin-1/2 Heisenberg chain compound with complex frustrated interchain couplings
• Field-induced double dome and Bose-Einstein condensation in the crossing quantum spin chain system AgVOAsO4
• Bose-Einstein condensation of triplons close to the quantum critical point in the quasi-one-dimensional spin-$1/2$ antiferromagnet NaVOPO${}_4$

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