Multiferroic behavior in trimerized Mott insulators

Abstract

We demonstrate multiferroic behavior in trimerized Mott insulators through interplay between spins and electric dipole moments resulting from electronic charge fluctuations in frustrated units. The model consists of stacked triangular layers of trimers with small intertrimer exchange interactions $J^{\prime }$ and $J"$. Ferroelectric states coexist with ferro- or antiferromagnetic orderings depending on the value of the magnetic field $H$ and the sign of the interlayer exchange $J"$. The electric polarization undergoes abrupt changes as a function of $H$.

5 pages, 2 figures; published in Phys. Rev. Lett

References in corpus (10)

• Bose-Einstein Condensation in Magnetic Insulators
• Dimensional reduction at a quantum critical point
• Electronic Orbital Currents and Polarization in Mott Insulators
• Magnetic characterization of the frustrated three-leg ladder compound [(CuCl2tachH)3Cl]Cl2
• Quantum phase transitions of the asymmetric three-leg spin tube
• Low-lying excitations of the three-leg spin tube using the density-matrix renormalization group method
• Heat capacity uncovers physics of a frustrated spin tube
• Coexistence of vector chiral order and Tomonaga-Luttinger liquid in the frustrated three-leg spin tube in a magnetic field
• Spin superstructure and noncoplanar ordering in metallic pyrochlore magnets with degenerate orbitals
• Effective quantum dimer model for trimerized kagome antiferromagnet

Cited by in corpus (9)

• Magnetic vortex crystals in frustrated Mott insulator
• Electric polarization observed in single crystals of multiferroic Lu2MnCoO6
• Magnetization and spin dynamics of the spin S=1/2 hourglass nanomagnet Cu5(OH)2(NIPA)4*10H2O
• Mechanism for subgap optical conductivity in honeycomb Kitaev materials
• Spin-orbit coupling and electronic charge effects in Mott insulators
• Multiferroicity with coexisting isotropic and anisotropic spins in Ca${}_3$Co${}_{2-x}$Mn${}_x$O${}_6$
• Combined analytical and numerical approach to magnetization plateaux in one-dimensional spin tube antiferromagnets
• Emergent Electric Polarization by Kondo Effect in a Triangular Triple Quantum Dot
• Orbital Magnetism Induced by Heat Currents in Mott insulators