Electro-spinon in one-dimensional Mott insulator

Abstract

The low-energy dynamical optical response of dimerized and undimerized spin liquid states in a one-dimensional charge transfer Mott insulator is theoretically studied. An exact analysis is given for the low-energy asymptotic behavior using conformal field theory for the undimerized state. In the dimerized state, the infrared absorption due to the bound state of two solitons, i.e, the breather mode, is predicted with an accurate estimate for its oscillator strength, offering a way to detect experimentally the excited singlet state. Effects of external magnetic fields are also discussed.

5 pages, 2 figures, some typos are corrected

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Cited by in corpus (12)

• High-harmonic generation by electric polarization, spin current, and magnetization
• Coefficients of bosonized dimer operators in spin-1/2 XXZ chains and their applications
• Geometric aspects of nonlinear and nonequilibrium phenomena
• Rectification of Spin Current in Inversion-Asymmetric Magnets with Linearly-Polarized Electromagnetic Waves
• Electric polarization and nonlinear optical effects in noncentrosymmetric magnets
• Control of Magnetic and Topological Orders with a DC Electric Field
• Optical conductivity of visons in Z2 spin liquids close to a VBS transition on the kagome lattice
• Theory of Raman Scattering in One-Dimensional Quantum Spin-1/2 Antiferromagnets
• Adjacent Spin Operator Dynamical Structure Factor of the S=1/2 Heisenberg Chain
• Nonlinear spin current of photoexcited magnons in collinear antiferromagnets
• Magnetic excitations in an ionic spin-chain system with a non-magnetic ferroelectric instability
• Dynamical Charge Structure Factor of a One-Dimensional Ionic Hubbard Model in the Low-Energy Region