Averievite: a copper oxide kagome antiferromagnet

Abstract

Averievite, Cu${}_5$V${}_2$O${}_{10}$(CsCl), is an oxide mineral composed of Cu${}^{2+}$ kagome layers sandwiched by Cu${}^{2+}$-V${}^{5+}$ honeycomb layers. We have synthesized this oxide and investigated its properties from ab initio calculations along with susceptibility and specific heat measurements. The data indicate a Curie-Weiss temperature of 185 K as well as long-range magnetic order at 24 K due to the significant interlayer coupling from the honeycomb copper ions. This order is suppressed by substituting these coppers by isoelectronic zinc, suggesting that Zn-substituted averievite is a promising spin liquid candidate. A further proposed substitution that replaces V${}^{5+}$ by Ti${}^{4+}$ not only dopes the material, but is predicted to give rise to a two-dimensional electronic structure featuring Dirac crossings. As such, averievite is an attractive platform for S=1/2 kagome physics with the potential for realizing novel electronic states.

References in corpus (8)

• Quantum Spin Liquids
• Quantum Spin Liquid States
• Fractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet
• Massive Dirac fermions in a ferromagnetic kagome metal
• Herbertsmithite and the Search for the Quantum Spin Liquid
• Theoretical prediction of a strongly correlated Dirac metal
• Correlated impurities and intrinsic spin liquid physics in the kagome material Herbertsmithite
• Strong magnetic frustration in Y${}_3$Cu${}_9$(OH)${}_{19}$Cl${}_8$: a distorted kagome antiferromagnet

Cited by in corpus (11)

• Quantum Spin Liquids
• The Chemistry of Quantum Spin Liquids
• Quantum Magnetism in Minerals
• Antiferromagnetic spin-frustrated layers of corner-sharing Cu4 tetrahedra on the kagome lattice in volcanic minerals Cu5O2(VO4)2(CuCl), NaCu5O2(SeO3)2Cl3, and K2Cu5Cl8(OH)4 2H2O
• Valence bond phases of herbertsmithite and related copper kagome materials
• Magnetic terahertz resonances above the Néel temperature in the frustrated kagome antiferromagnet averievite
• Role of chemical pressure on the electronic and magnetic properties of spin-1/2 kagome mineral averievite
• Cascade of phase transitions and large magnetic anisotropy in a triangle-kagome-triangle trilayer antiferromagnet
• Bulk Crystal Growth and Single-Crystal-to-Single-Crystal Phase Transitions in the Averievite CsClCu5V2O10
• Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers
• Crystal structure, magnetic and resonant properties of decorated spin kagome system (CsCl)Cu${}_5$As${}_2$O${}_{10}$