Contrasting Magnetic Structures in SrLaCuSbO${}_6$ and SrLaCuNbO${}_6$: Spin-1/2 Quasi-Square-Lattice $J_1-J_2$ Heisenberg Antiferromagnets

Abstract

We report the magnetic properties of the double perovskites SrLaCuSbO${}_6$ (SLCSO) and SrLaCuNbO${}_6$ (SLCNO). The temperature dependence of the magnetic susceptibilities of both compounds shows a broad maximum characteristic of an $S=1/2$ square lattice Heisenberg antiferromagnet. Magnetic ordering occurs at $T_{\mathrm{N}}=13.6$ and 15.7 K for SLCSO and SLCNO, respectively. Neutron powder diffraction measurements reveal contrasting spin structures in both compounds. The spin structures of SLCSO and SLCNO below $T_{\mathrm{N}}$ are Néel antiferromagnetic and collinear antiferromagnetic, respectively. This result demonstrates that the nearest-neighbor interaction is dominant in SLCSO, whereas the next-nearest-neighbor interaction is dominant in SLCNO. The magnitude of the ordered moment was evaluated at 3.5 K to be $m=0.39(3){\mu }_{\mathrm{B}}$ for SLCSO and $0.37(1){\mu }_{\mathrm{B}}$ for SLCNO, which are significantly smaller than those calculated using linear spin wave theory. We infer that the small ordered moment is caused by the effect of exchange bond randomness arising from the site disorder of Sr and La ions.

arXiv comment13 pages, 14 figures

References in corpus (45)

• Quantum Spin Liquids
• Spin Liquid Ground State of the Spin-1/2 Square $J_1$-$J_2$ Heisenberg Model
• Nematic order in square lattice frustrated ferromagnets
• Plaquette Ordered Phase and Quantum Phase Diagram in the Spin-1/2 J1-J2 Square Heisenberg Model
• Resonating Valence Bond Wave Functions for Strongly Frustrated Spin Systems
• Li${}_2$VO(Si,Ge)O${}_4$, a prototype of a two-dimensional frustrated quantum Heisenberg antiferromagnet
• Plaquette valence bond solid in the frustrated Heisenberg quantum antiferromagnet on the square lattice
• Dimer Order with Striped Correlations in the J_1-J_2 Heisenberg Model
• Spontaneous plaquette dimerization in the $J_1-J_2$ Heisenberg model
• Ground-state phases of the spin-1/2 J_1-J_2 Heisenberg antiferromagnet on the square lattice: A high-order coupled cluster treatment
• New quantum phase transitions in the two-dimensional J1-J2 model
• Asymptotic scaling of the square lattice quantum Heisenberg antiferromagnet
• Magnetic properties of BaCdVO(PO_4)_2: a strongly frustrated spin-1/2 square lattice close to the quantum critical regime
• New valence bond crystal phase of a frustrated spin-1/2 square lattice antiferromagnet
• The J1-J2 model: First order phase transition versus deconfinement of spinons
• Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model
• Magnetic and thermodynamic properties of Li(2)VOSiO(4): a two-dimensional S=1/2 frustrated antiferromagnet on a square lattice
• Spin-liquid-like state in a spin-1/2 square-lattice antiferromagnet perovskite induced by $d^{10}$-$d^0$ cation mixing
• Specific heat and high-temperature series of lattice models: interpolation scheme and examples on quantum spin systems in one and two dimensions
• Extension of the spin-1/2 frustrated square lattice model: the case of layered vanadium phosphates
• Ground-state phase diagram of the quantum $J_1-J_2$ model on the square lattice
• Valence Bond Glass Phase in the Diluted Kagome Antiferromagnets
• Direct Calculation of the Spin Stiffness in the $J_1$--$J_2$ Heisenberg Antiferromagnet
• Single Crystal 31P NMR Studies of the Frustrated Square Lattice Compound Pb2(VO)(PO4)2
• Frustrated spin-1/2 square lattice in the layered perovskite PbVO(3)
• The frustrated spin-1/2 J1-J2 Heisenberg ferromagnet on the square lattice: Exact diagonalization and Coupled-Cluster study
• Low-energy fixed points of random Heisenberg models
• Nature of the randomness-induced quantum spin liquids in two dimensions
• Random-Singlet Phase in Disordered Two-Dimensional Quantum Magnets
• Tuning the $S=1/2$ square-lattice antiferromagnet Sr${}_2$Cu(Te${}_{1-x}$W${}_x$)O${}_6$ from Néel order to quantum disorder to columnar order
• Randomness-induced quantum spin liquid behavior in the $s=\frac{1}{2}$ random $J_1$-$J_2$ Heisenberg antiferromagnet on the square lattice
• Magnetic Structure of the $S=1/2$ Quasi-Two-Dimensional Square-Lattice Heisenberg Antiferromagnet Sr${}_2$CuTeO${}_6$
• Random-exchange quantum Heisenberg antiferromagnets on the square lattice
• Magnetic excitations and electronic interactions in Sr${}_2$CuTeO${}_6$: a spin-1/2 square lattice Heisenberg antiferromagnet
• Frustrated square lattice with spatial anisotropy: crystal structure and magnetic properties of PbZnVO(PO4)2
• The Valence Bond Glass phase
• Second-order quantum corrections for the frustrated, spatially anisotropic, spin-1/2 Heisenberg antiferromagnet on a square lattice
• Spin wave excitations in the tetragonal double perovskite Sr${}_2$CuWO${}_6$
• Valence bond spin liquid state in two-dimensional frustrated spin-1/2 Heisenberg antiferromagnets
• Fluctuations and correlations in a frustrated S=1/2 square lattice with competing ferromagnetic and antiferromagnetic interactions: a muSR study
• Extreme Suppression of Antiferromagnetic Order and Critical Scaling in a Two-Dimensional Random Quantum Magnet
• Valence-Bond-Glass State with Singlet Gap in the Spin-1/2 Square-Lattice Random $J_1$-$J_2$ Heisenberg Antiferromagnet Sr${}_2$CuTe${}_{1-x}$W${}_x$O${}_6$
• Quantum-critical scaling properties of the two-dimensional random-singlet state
• Strong Suppression of Magnetic Ordering in an S = 1/2 Square-Lattice Heisenberg Antiferromagnet Sr2CuTeO6
• Rb-NMR study of the quasi-one dimensional competing spin-chain compound Rb2Cu2Mo3O12

Cited by in corpus (7)

• Double magnetic transitions and exotic field induced phase in the triangular lattice antiferromagnets Sr${}_3$Co(Nb,Ta)${}_2$O${}_9$
• Deformed spin-$\frac{1}{2}$ square lattice in antiferromagnetic NaZnVOPO${}_4$(HPO${}_4$)
• Structure, spin correlations and magnetism of the $S=1/2$ square-lattice antiferromagnet Sr${}_2$CuTe${}_{1-x}$W${}_x$O${}_6$ ($0\le x\le 1$)
• Plaquette valence bond state in spin-1/2 J1-J2 XY model on square lattice
• Field-induced states and thermodynamics of the frustrated Heisenberg antiferromagnet on a square lattice
• Bulk magnetic properties of distorted square lattice compounds M'-LnTaO4 (Ln = Tb, Dy, Ho, Er)
• NMR study on equilateral triangular lattice antiferromagnet Ba2La2CoTe2O12