Kagome quantum spin systems in the atacamite family

Abstract

We present the hydrothermal synthesis, as well as structural and chemical analysis of single crystals on the compounds EuCu${}_3$(OH)${}_6$Cl${}_3$, Zn${}_x$Cu${}_{4-x}$(OH)${}_6$(NO${}_3$)${}_2$ and haydeeite, MgCu${}_3$(OH)${}_6$Cl${}_2$ all arising from the atacamite family. Magnetic and specific-heat measurements down to 1.8 K are carried out for these systems. EuCu${}_3$(OH)${}_6$Cl${}_3$ has a frustrated antiferromagnetic Cu${}^{2+}$ ground state with order at 15 K, a strong anisotropy and increased magnetization from Van Vleck paramagnetic Eu${}^{3+}$ contributions. ZnCu${}_3$(OH)${}_6$(NO${}_3$)${}_2$ reveals antiferromagnetic order at 9 K and measurements on haydeeite single crystals confirm the ferromagnetic order at 4.2 K with the easy axis within the kagome plane. These results prove that the atacamite family presents a broad class of materials with interesting magnetic ground states.

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Cited by in corpus (15)

• Quantum Magnetism in Minerals
• Coexistence of magnetic order and persistent spin dynamics in a quantum kagome antiferromagnet with no intersite mixing
• Dynamic fingerprint of fractionalized excitations in single-crystalline Cu${}_3$Zn(OH)${}_6$FBr
• From spin liquid to magnetic ordering in the anisotropic kagome Y-Kapellasite Y3Cu9(OH)19Cl8: a single crystal study
• Controlling frustrated magnetism on the kagome lattice by uniaxial-strain tuning
• Magnetic phase diagram of Cu${}_{4-x}$Zn${}_x$(OH)${}_6$FBr studied by neutron-diffraction and $\mu$SR techniques
• Antiferromagnetism in kagome $\alpha$-Cu${}_3$Mg(OH)${}_6$Br${}_2$
• Magnetic ordering of the distorted kagome antiferromagnet Y${}_3$Cu${}_9$(OH)${}_{18}$[Cl${}_8$(OH)] prepared via optimal synthesis
• NMR evidence of spinon localization in kagome antiferromagnet YCu${}_3$(OH)${}_6$Br${}_2$[Br${}_{1-x}$(OH)${}_x$]
• $LnC{u}_3(OH{)}_{6}C{l}_3(Ln=Gd,Tb,Dy)$: Heavy Lanthanides on Spin-1/2 Kagome Magnets
• Chemo-Structural Disorder in the kagomé spin $S$ = 1/2 systems ZnCu${}_3$(OH)${}_6$Cl${}_2$ and YCu${}_3$(OH)${}_6$Br${}_2$[Br${}_x$(OH)${}_{1-x}$]
• Lattice dynamics of the frustrated kagome compound Y-kapellasite
• Exerting chemical pressure on the kagome lattice as frustration control in the kapellasite family $A$Cu${}_3$(OH)${}_{6+x}$(Cl,Br)${}_{3-x}$
• The Magnetic Ground State of Atacamite Cu${}_2$Cl(OH)${}_3$: The Crucial Role of Frustrated Zigzag Chains Revealed by Inelastic Neutron Scattering
• SrCu(OH)${}_3$Cl, an ideal isolated equilateral triangle spin $S$ = 1/2 model system