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Magnons and crystal-field transitions in hexagonalRMnO3(R= Er, Tm, Yb, Lu) single crystals

E. C. Standard, T. Stanislavchuk, A. A. Sirenko, N. Lee, S.-W. Cheong
2012 Physical Review B  

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2012 pre-print
arXiv:1202.5803v1 fatcat:xd4lafvewjatfnw6kzksprgp6y
Far-infrared optical transmission spectra of the antiferromagnetic resonances, or magnons, and crystal field transitions have been studied in hexagonal REMnO3 (RE = Er, Tm, Yb, Lu) single crystals. The magnon and CF frequencies, their oscillator strengths, and effective g-factors have been measured using external magnetic fields up to 9 T in the temperature range between 1.5 K and 100 K. The magnon frequency increases systematically with a decrease of the RE ion radius. The magnetic ordering of
more » ... RE ions (RE=Er, Tm, Yb) was observed at low temperatures T<3.5 K and in strong external magnetic fields. The observed effects are analyzed taking into account main magnetic interactions in the system including exchange of the Mn3+ spins with RE3+ paramagnetic moments.
doi:10.1103/physrevb.85.144422 fatcat:4epmwzhfgfbs5ibzeib2cgcpdu
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E. C. Standard, T. Stanislavchuk, A. A. Sirenko, N. Lee, S.-W. Cheong. "Magnons and crystal-field transitions in hexagonalRMnO3(R= Er, Tm, Yb, Lu) single crystals." Physical Review B 85.14 (2012)