Zobrazeno 1 - 10 of 224 pro vyhledávání: '"A. Trokiner"'
1
Report
Melting of the orbital order in LaMnO3 probed by NMR
Autor: Trokiner, A., Verkhovskii, S., Gerashenko, A., Volkova, Z., Anikeenok, O., Mikhalev, K., Eremin, M.
The Mn spin correlations were studied near the O'-O phase transition at T{JT} = 750 K, up to 950 K with 17O and 139La NMR in a stoichiometric LaMnO3 crystalline sample. The measured local hyperfine fields originate from the electron density transfere
Externí odkaz: http://arxiv.org/abs/1303.3112
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2
Report
First 17O NMR study of a 17O enriched LaMnO3 stoichiometric crystal
Autor: Loreynne-Gaudart, L. Pinsard, Trokiner, A., Verkhovskii, S., Gerashenko, A., Dragoe, N.
We present the synthesis and the NMR characterization of a 17O enriched LaMnO3 crystalline sample. We checked that it is single phase and, more important, stochiometric in oxygen. Its 17O enrichment estimated by NMR is about 5.5%. These first 17O NMR
Externí odkaz: http://arxiv.org/abs/1107.0811
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3
Report
The charge ordered state in half-doped Bi-based manganites studied by $^{17}$O and $^{209}$Bi NMR
Autor: Trokiner, A., Verkhovskii, S., Yakubovskii, A., Kumagai, K., Cheong, S-W., Khomskii, D., Furukawa, Y., Ahn, J. S., Pogudin, A., Ogloblichev, V., Gerashenko, A., Mikhalev, K., Piskunov, Yu.
We present a $^{209}$Bi and $^{17}$O NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi$_{0.5}$Sr$_{0.5}$MnO$_{3}$ and Bi$_{0.5}$Ca$_{0.5}$MnO$_{3}$. The unusually large local magnetic field $^{209}H_{loc}$ ind
Externí odkaz: http://arxiv.org/abs/cond-mat/0503499
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4
Report
Isotopic disorder in Ge single crystals probed with 73Ge NMR
Autor: Verkhovskii, S. V., Yakubovsky, A. Yu., Malkin, B. Z., Saikin, S. K., Cardona, M., Trokiner, A., Ozhogin, V. I.
Publikováno v: Phys. Rev. B 68, 104201 (2003)
NMR spectra of 73 Ge (nuclear spin I = 9/2) in germanium single crystals with different isotopic compositions have been measured at the frequency of 17.4 MHz at room temperature. Due to the small concentration (~0.1%) of the magnetic (73 Ge) isotope,
Externí odkaz: http://arxiv.org/abs/cond-mat/0306381
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5
Report
Charge and Orbital Ordering in Pr_{0.5} Ca_{0.5} MnO_3 Studied by ^{17}O NMR
Autor: Yakubovskii, A., Trokiner, A., Verkhovskii, S., Gerashenko, A., Khomskii, D.
The charge and orbital ordering in Pr_{0.5} Ca_{0.5} MnO_3 is studied for the first time by ^{17}O NMR. This local probe is sensitive to spin, charge and orbital correlations. Two transitions exist in this system: the charge and orbital ordering at T
Externí odkaz: http://arxiv.org/abs/cond-mat/0208592
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6
Report
207Pb and 17O NMR Study of the Electron Density Distribution in Metal Phase of BaPb_{1-x}Bi_xO_3
Autor: Piskunov, Yu., Gerashenko, A., Pogudin, A., Ananyev, A., Mikhalev, K., Okulova, K., Verkhovskii, S., Yakubovsky, A., Trokiner, A.
The 17O and 207Pb NMR spectra were measured in ceramic samples in the metallic phase of BaPb_{1-x}Bi_{x}O_3 oxides (0
Externí odkaz: http://arxiv.org/abs/cond-mat/0106431
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8
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