Dynamical properties of the spin-Peierls compound α'--NaV2O5

Abstract

Dynamical properties of the novel inorganic spin-Peierls compound α'--NaV2O5 are investigated using a one-dimensional dimerized Heisenberg model. By exact diagonalizations of chains with up to 28 sites, supplemented by a finite-size scaling analysis, the dimerization parameter δis determined by requiring that the model reproduces the experimentally observed spin gap Δ. The dynamical and static spin structure factors are calculated. As for CuGeO3, the existence of a low energy magnon branch separated from the continuum is predicted. The present calculations also suggest that a large magnetic Raman scattering intensity should appear above an energy threshold of 1.9 Δ. The predicted photoemission spectrum is qualitatively similar to results for an undimerized chain due to the presence of sizable short-range antiferromagnetic correlations.

4 pages, latex, minor misprints corrected and a few references added

References in corpus (1)

• Spin dynamics of the spin-Peierls compound CuGeO_3 under magnetic field

Cited by in corpus (26)

• Thermodynamics of Spin S = 1/2 Antiferromagnetic Uniform and Alternating-Exchange Heisenberg Chains
• Long-distance entanglement in spin systems
• A Study of the S=1/2 Alternating Chain using Multiprecision Methods
• Enhancement of Antiferromagnetic Correlations Induced by Nonmagnetic Impurities: Origin and Predictions for NMR Experiments
• Quantum Monte Carlo in the Interaction Representation --- Application to a Spin-Peierls Model
• Elementary Excitations in Dimerized and Frustrated Heisenberg Chains
• Coexistence of charge density wave and spin-Peierls orders in quarter-filled quasi-one dimensional correlated electron systems
• Dynamical effects of phonons on soliton binding in spin-Peierls systems
• Spin Dynamics of the One-Dimensional J-J' Model and Spin-Peierls Transition in CuGeO_3
• Study of spin-Peierls transition in alpha'--NaV2O5 by infrared reflectivity
• Three-Dimensional Ordering in Weakly Coupled Antiferromagnetic Ladders and Chains
• Theoretical study of the optical conductivity of ${\alpha }^{\prime }-Na{V}_2{O}_5$
• Investigation of soliton bound states in the Raman spectrum of pure and doped spin-Peierls chains
• Spectrum of elementary and collective excitations in the dimerized S=1/2 Heisenberg chain with frustration
• Study of impurities in spin-Peierls systems including lattice relaxation
• Particle Content of the Nonlinear Sigma Model with Theta-Term: a Lattice Model Investigation
• Single-hole dynamics in dimerized and frustrated spin-chains
• The dimerized ferromagnetic Heisenberg chain
• Dynamical Properties of Spin-Orbital Chains in a Magnetic Field
• Quasi-particle interactions in frustrated Heisenberg chains
• Electron spins interaction in the spin-Peierls phase of the organic spin chain (o -DMTTF) 2 X (X = Cl, Br, I)
• Charge Ordering and Spin gap in NaV_2O_5
• Dynamical properties of the compounds CuGeO_3 and α'--NaV_2O_5 at temperatures $T\ne 0$
• Critical Properties in Dynamical Charge Correlation Function for the One-Dimensional Mott Insulator
• Line shapes of dynamical correlation functions in Heisenberg chains
• Optimal quasi-free approximation:reconstructing the spectrum from ground state energies