Magnetic terahertz resonances above the Néel temperature in the frustrated kagome antiferromagnet averievite

Abstract

Time-domain magneto-THz spectroscopy is utilized to study the frustrated magnet averievite Cu${}_{5-x}$Zn${}_x$V${}_2$O${}_{10}$(CsCl). Pronounced THz resonances are observed in unsubstituted samples ($x=0$) when cooling below the onset of short-range magnetic correlations. The influence of external magnetic effects confirms the magnetic origin of these resonances. Increasing Zn substitution suppresses the resonances, as frustration effects dominate, reflecting the non-magnetic phases for $x>0.25$ compounds. The temperature evolution of the THz spectra is complemented with electron spin resonance spectroscopy. This comparison allows a direct probe of the different contributions from magnetic order, frustration, and structural properties in the phase diagram of averievite. Our results illustrate the effect of magnetic interactions in THz spectra of frustrated magnets.

arXiv comment7 pages, 5 figures, plus supplement

References in corpus (36)

• Quantum Spin Liquids
• Herbertsmithite and the Search for the Quantum Spin Liquid
• A Field Guide to Spin Liquids
• Physics of the Kitaev model: fractionalization, dynamical correlations, and material connections
• Intense paramagnon excitations in a large family of high-temperature superconductors
• Spin pumping and spin-transfer torques in antiferromagnets
• Gapless spin-liquid phase in the kagome spin-1/2 Heisenberg antiferromagnet
• Experimental identification of quantum spin liquids
• Probing spin correlations with phonons in the strongly frustrated magnet ZnCr2O4
• Two-dimensional terahertz magnetic resonance spectroscopy of collective spin waves
• Pinwheel VBS state and triplet excitations in the two-dimensional deformed kagome lattice
• The Commensurate-Incommensurate Charge-Density-Wave Transition and Phonon Zone Folding in 1T-TaSe2 Thin Films
• First-principles determination of Heisenberg Hamiltonian parameters for the spin-1/2 kagome antiferromagnet ZnCu3(OH)6Cl2
• Antiferromagnetic resonance and terahertz continuum in $\alpha -$RuCl${}_3$
• Optical control of magnetization of micron-size domains in antiferromagnetic NiO single crystals
• Optical phonons, spin correlations, and spin-phonon coupling in the frustrated pyrochlore magnets CdCr2O4 and ZnCr2O4
• Nonlinear magnetization dynamics of antiferromagnetic spin resonance induced by intense terahertz magnetic field
• Quantum Magnetism in Minerals
• Field evolution of magnons in $\alpha$-RuCl${}_3$ by high-resolution polarized terahertz spectroscopy
• Spin Induced Optical Conductivity in the Spin Liquid Candidate Herbertsmithite
• Low Energy Electrodynamics of Novel Spin Excitations in the Quantum Spin Ice Yb${}_2$Ti${}_2$O${}_7$
• Power-law Conductivity inside the Mott gap: application to $\kappa -(BEDT-TTF{)}_{2}C{u}_2(CN{)}_3$
• Strong magnetic frustration in Y${}_3$Cu${}_9$(OH)${}_{19}$Cl${}_8$: a distorted kagome antiferromagnet
• Phase diagram of a distorted kagome antiferromagnet and application to Y-kapellasite
• Nature of Magnetic Excitations in the High-Field Phase of $\alpha$-RuCl${}_3$
• Mechanisms for Sub-Gap Optical Conductivity in Herbertsmithite
• Field induced magnon excitation and in gap absorption of Kitaev candidate RuCl3
• Averievite: a copper oxide kagome antiferromagnet
• Temperature Dependence of Magnetic Excitations: Terahertz Magnons above the Curie Temperature
• Low energy excitations and dynamic Dzyaloshinskii-Moriya interaction in ${\alpha }^{\prime }$-NaV${}_2$O${}_5$ studied by far infrared spectroscopy
• Mechanism for subgap optical conductivity in honeycomb Kitaev materials
• 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
• Optical conductivity of visons in Z2 spin liquids close to a VBS transition on the kagome lattice
• Role of chemical pressure on the electronic and magnetic properties of spin-1/2 kagome mineral averievite
• Nonlinear optical conductivity of $U(1)$ spin liquids with large spinon Fermi surfaces

Cited by in corpus (5)

• 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
• Coherent two-dimensional THz magnetic resonance spectroscopies for molecular magnets: Analysis of Dzyaloshinskii-Moriya interaction
• Optical detection of bond-dependent and frustrated spin in the two-dimensional cobalt-based honeycomb antiferromagnet Cu3Co2SbO6
• Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers