Single-crystal growth and dependences on the hole concentration and magnetic field of the magnetic ground state in the edge-sharing CuO${}_2$ chain system Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$

Abstract

We have succeeded in growing large-size single-crystals of Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$ with $0\le x\le 1.67$ and measured the magnetic susceptibility, specific heat and magnetization curve, in order to study the magnetic ground state in the edge-sharing CuO${}_2$ chain as a function of hole concentration and magnetic field. In $0\le x\le 1.3$, it has been found that an antiferromagnetically ordered phase with the magnetic easy axis along the b-axis is stabilized and that a spin-flop transition occurs by the application of magnetic fields parallel to the b-axis. The antiferromagnetic transition temperature decreases with increasing $x$ and disappears around $x=$ 1.4. Alternatively, a spin-glass phase appears around $x=1.5$. At $x=1.67$ where the hole concentration is $\sim$ 1/3 per Cu, it appears that a spin-gap state is formed owing to the formation of spin-singlet pairs. No sign of the coexistence of an antiferromagnetically ordered state and a spin-gap one suggested in Ca${}_{1-x}$CuO${}_2$ has been found in Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$.

arXiv comment13 pages, 12 figures, 1 table

References in corpus (5)

• Experiments on Ladders Reveal a Complex Interplay between a Spin-Gapped Normal State and Superconductivity
• Electronic States and Magnetic Propertis of Edge-sharing Cu-O Chains
• The Spin Dynamics of the Spin Ladder, Dimer Chain Material Sr14Cu24O41
• Systematic Study of Short Range Antiferromagnetic Order and The Spin-Glass State in Lightly Doped La2-xSrxCuO4
• Effects of hole-doping on the magnetic ground state and excitations in the edge-sharing CuO${}_2$ chains of Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$

Cited by in corpus (13)

• The Role of Lattice Coupling in Establishing Electronic and Magnetic Properties in Quasi-One-Dimensional Cuprates
• Electron-lattice interactions strongly renormalize the charge transfer energy in the spin-chain cuprate Li${}_2$CuO${}_2$
• Highly Dispersive Spin Excitations in the Chain Cuprate Li2CuO2
• Charge-orbital-lattice coupling effects in the dd-excitation profile of one dimensional cuprates
• Saturation field of frustrated chain cuprates: broad regions of predominant interchain coupling
• Ca2Y2Cu5O10: the first frustrated quasi-1D ferromagnet close to criticality
• Thermodynamics of the one-dimensional frustrated Heisenberg ferromagnet with arbitrary spin
• Momentum Dependent Charge Excitations of Two-Leg Ladder: Resonant Inelastic X-ray Scattering of (La,Sr,Ca)14Cu24O41
• Highly dispersive magnons with spin-gap like features in the frustrated ferromagnetic S=1/2 chain compound Ca2Y2Cu5O10 detected by inelastic neutron scattering
• Effects of hole-doping on the magnetic ground state and excitations in the edge-sharing CuO${}_2$ chains of Ca${}_{2+x}$Y${}_{2-x}$Cu${}_5$O${}_{10}$
• Incommensurate spin density modulation in a copper-oxide chain compound with commensurate charge order
• Fractional charges and spin-charge separation in one-dimensional Wigner lattices
• Magnetism of one-dimensional Wigner lattices and its impact on charge order