Nonrelativistic Multiferroicity in the Nonstoichiometric Spin s=1/2 Spiral Chain Cuprate LiCu2O2

Abstract

We argue for a recently observed puzzling multiferroic behavior in s=1/2 1D chain cuprate LiCu2O2 with edge-shared arrangement of CuO4 plaquettes and incommensurate spiral spin ordering can be consistently explained if one takes into account the nonrelativistic exchange-induced electric polarization on the Cu2+ centers substituting for the positions native for the Cu1+ ions. These substituent centers are proved to be an effective probe of the spin incommensurability and magnetic field effects.

4 pages, 4 figures

References in corpus (6)

• Spin current and magneto-electric effect in non-collinear magnets
• Correlation between spin helicity and electric polarization vector in quantum-spin chain magnet LiCu${}_2$O${}_2$
• Switching the Ferroelectric Polarization by External Magnetic Fields in the Spin = 1/2 Chain Cuprate LiCuVO4
• Multiferroicity in the spin-1/2 quantum matter of LiCu2O2
• Microscopic mechanisms of spin-dependent electric polarization in 3d oxides
• Multiferroicity due to nonstoichiometry in the chain cuprate LiVCuO_4

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• DFT, L(S)DA, LDA+U, LDA+DMFT..., whether we do approach to a proper description of optical response for strongly correlated systems?
• Thermal conductivity of pure and Zn-doped LiCu_2O_2 single crystals