The d Orbital Character in the Spin-Peierls System NaV2O5.

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  • Ohama Tetsuo
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106
  • Yasuoka Hiroshi
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106
  • Isobe Masahiko
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106
  • Ueda Yutaka
    Institute for Solid State Physics, University of Tokyo, Roppongi, Minato–ku, Tokyo 106

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  • d Orbital Character in the Spin-Peierls
  • The<i><i>d</i></i>Orbital Character in the Spin-Peierls System NaV<sub><b>2</b></sub>O<sub><b>5</b></sub>

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51V NMR measurements in the uniform state of NaV2O5 are presented. The NMR shift and the electrical field gradient (EFG) were measured at the tetravalent V sites. Observed anisotropy of the NMR shift and the EFG indicates that the dxy-like orbital is occupied. It has been found that the orbital susceptibility in the uniform state is significantly smaller than the residual susceptibility in the spin-Peierls state. The possible origins of this disagreement are discussed.

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