Multiferroicity in the spin-1/2 quantum matter of LiCu2O2

Abstract

Multiferroicity in LiCu2O2 single crystals is studied using resonant soft x-ray magnetic scattering, hard x-ray diffraction, heat capacity, magnetic susceptibility, and electrical polarization. Two magnetic transitions are found at 24.6 K (T1) and 23.2 K (T2). Our data are consistent with a sinusoidal spin structure at T2<T<T1 and with a helicoidal spin structure at T<T2 giving rise to ferroelectricity. Surprisingly, above T2 the correlation lengths of the spin structures increase as the temperature increases with dramatic changes of ~42% along the c-axis. Our results demonstrate the interplay of the geometrical frustration and the electronic and magnetic polarizations.

10 pages (long-version), 3 figures

References in corpus (10)

• Ferroelectricity in spiral magnets
• Reply to Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• NMR and LDA evidence for spiral magnetic order in the chain cuprate LiCu2O2
• Field induced linear magneto-elastic coupling in multiferroic TbMnO3
• Soft x-ray resonant diffraction study of magnetic and orbital correlations in a manganite near half-doping
• Helicoidal magnetic order in a clean copper oxide spin chain compound
• A Structural Probe of the Doped Holes in Cuprate Superconductors
• Comment on "Competition between helimagnetism and commensurate quantum spin correlations in LiCu2O2"
• Spectroscopy of stripe order in La1.8Sr0.2NiO4 using resonant soft x-ray diffraction
• Oxygen Moment Formation and Canting in Li2CuO2

Cited by in corpus (24)

• Cupric chloride CuCl2 as an S=1/2 chain multiferroic
• Quantum Otto heat engine based on a multiferroic chain working substance
• Thermodynamics of multiferroic spin chains
• Studies of Multiferroic System of LiCu2O2 II Magnetic Structures of Two Ordered Phases with Incommensurate Modulations
• Studies of Multiferroic System LiCu2O2 I Sample Characterization and Relationship between Magnetic Properties and Multiferroic Nature
• Pulse and quench induced dynamical phase transition in a chiral multiferroic spin chain
• Nonrelativistic Multiferroicity in the Nonstoichiometric Spin s=1/2 Spiral Chain Cuprate LiCu2O2
• Magnetic phase diagram of the frustrated S=1/2 chain magnet LiCu_2O_2
• Magnetic excitations and optical transitions in the multiferroic spin-1/2 system LiCu${}_2$O${}_2$
• Electronic structure, magnetic and dielectric properties of the edge-sharing copper-oxide chain compound NaCu${}_2$O${}_2$
• Muon-spin relaxation and heat capacity measurements on the magnetoelectric and multiferroic pyroxenes LiFeSi2O6 and NaFeSi2O6
• Microscopic mechanisms of spin-dependent electric polarization in 3d oxides
• Anisotropic dielectric and ferroelectric response of multiferroic LiCu2O2 in magnetic field
• Exotic phases of frustrated antiferromagnet LiCu2O2
• Magnetic structure of the frustrated S=1/2 chain magnet LiCu2O2 doped with nonmagnetic Zn
• Emergent phases in a compass chain with multisite interactions
• High-temperature structural phase transition in multiferroic LiCu_2O_2
• Thermodynamic properties of LiCu${}_2$O${}_2$ multiferroic compound
• The spiral spin state in a zigzag spin chain system
• Temperature-Dependent Anomalies in the Structure of the (001) Surface of LiCu2O2
• Thermal conductivity of pure and Zn-doped LiCu_2O_2 single crystals
• Temperature evolution of structural and magnetic properties of stoichiometric LiCu2O2: correlation of thermal expansion coefficient and magnetic order
• Investigation of the Structural and Dynamical Properties of the (001) Surface of LiCu2O2
• Magnetic-field-induced reorientation in the SDW and the spin-stripe phases of the frustrated spin-1/2 chain compound $\beta$-TeVO${}_4$