Magnetic excitation spectra of $NaV_2O_5$

K. Ladavac; M. J. Konstantinovic; A. Belic; Z. V. Popovic; A. N. Vasil'ev; M. Isobe; Y. Ueda

paper

Magnetic excitation spectra of $N a V_{2} O_{5}$

arXiv:cond-mat/9806258

Abstract

We present low temperature Raman spectra of $N a V_{2} O_{5}$ single crystal. The assignation of the observed modes is done on the basis of Monte Carlo calculation of excited states of Heisenberg dimerized Hamiltonian, without frustration. We found a good agreement between measured and calculated magnetic excitations for $I^´ = 0.048$ and $J = 452 K$ . The singlet-triplet, singlet-singlet excitations as well as two-magnon mode are observed to be at 66, 127 and 132 cm^{-1}.

8 pages, Latex, uses iopfts.sty, 4 eps figures, submitted to J. Phys. Cond. Matt., typos in abstract corrected

Magnetic excitation spectra of NaV2​O5​

Abstract

Magnetic excitation spectra of $N a V_{2} O_{5}$