Magnetic excitation spectra of NaV 2 O 5
نویسندگان
چکیده
We present low temperature Raman spectra of NaV 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 δ = 0.048 and J = 452 K. The singlet-triplet and singlet-singlet excitations as well as two-magnon mode are observed to be at 66, 127 and 132 cm −1 .
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تاریخ انتشار 1998