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On the nature of the energy gap in ytterbium dodecaboride YbB12

  • Proceedings of the XI Feofilov Workshop “Spectroscopy of Crystals Activated by Rare-Earth and Transition-Metal Ions” (Kazan, Tatarstan, Russia, September 24–28, 2001)
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Abstract

The YbB12 Kondo insulator was studied by EPR. The energy spectrum of YbB12 was established to have a gap of width 2Δ≈12 meV. The experimental data are interpreted in terms of the excitonic-dielectric model. The temperature behavior of the gap was determined; it was found that Δ(T)=72 K at absolute zero and vanishes at ∼115 K.

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Translated from Fizika Tverdogo Tela, Vol. 44, No. 8, 2002, pp. 1465–1468.

Original Russian Text Copyright © 2002 by Al’tshuler, Bresler.

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Al’tshuler, T.S., Bresler, M.S. On the nature of the energy gap in ytterbium dodecaboride YbB12 . Phys. Solid State 44, 1532–1535 (2002). https://doi.org/10.1134/1.1501353

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