Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1998-06-26
J.Phys.:Condens.Matter 10 7879-7896 (1998)
Physics
Condensed Matter
Strongly Correlated Electrons
16 pages, LATEX, 12 figures, submitted to Journal of Physics : Condensed Matter
Scientific paper
10.1088/0953-8984/10/35/020
ESR-study of the Ni-doped spin-Peierls compound CuGeO3 has been performed in the frequency range 9-75 GHz. At low temperatures the g-factor is smaller than the value expected for Cu- and Ni-ions. This anomaly is explained by the formation of magnetic clusters around the Ni-ions within a nonmagnetic spin-Peierls matrix. The transition into the AFM-state detected earlier by neutron scattering for doped samples was studied by means of ESR. For x=0.032 a gap in the magnetic resonance spectrum is found below the Neel temperature and the spectrum is well described by the theory of antiferromagnetic resonance based on the molecular field approximation. For x=0.017 the spectrum below the Neel point remained gapless. The gapless spectrum of the antiferromagnetic state in weekly doped samples is attributed to the small value of the Neel order parameter and to the magnetically disordered spin-Peierls background.
Eremina R. M.
Glazkov Vasiliy N.
Paul McK. D.
Petrenko Oleg A.
Smirnov Aleksei Iu.
No associations
LandOfFree
Electron-spin-resonance in the doped spin-Peierls compound Cu(1-x)Ni(x)GeO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Electron-spin-resonance in the doped spin-Peierls compound Cu(1-x)Ni(x)GeO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electron-spin-resonance in the doped spin-Peierls compound Cu(1-x)Ni(x)GeO3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-259575