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This article is cited in 12 scientific papers (total in 12 papers)
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Magnetoresistance scaling and the anisotropy of charge carrier scattering in the paramagnetic phase of Ho$_{0.8}$Lu$_{0.2}$B$_{12}$ cage glass
N. E. Sluchankoab, A. L. Khoroshilovab, A. V. Bogacha, V. V. Voronova, V. V. Glushkovab, S. V. Demishevab, V. N. Krasnorusskya, K. M. Krasikovb, N. Yu. Shitsevalovac, V. B. Philipovc a Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
b Moscow Institute of Physics and Technology (State University), Dolgoprudnyi, Moscow region, Russia
c Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Abstract:
The transverse magnetoresistance of Ho$_{0.8}$Lu$_{0.2}$B$_{12}$ dodecaboride with a cage glass structure is studied at low (2–10 K) temperatures. It is demonstrated that the isotropic negative magnetoresistance in this antiferromagnet is dominant within the broad temperature range near $T_{\mathrm{N}}\approx \mathrm{K}$. This contribution to the total magnetoresistance is due to the scattering of charge carriers by nanoclusters formed by Но$^{3+}$ ions, and it can be scaled in the $\rho=f(\mu_{\text{eff}}^2H^2/T^2)$ representation. It is found that the magnetoresistance anisotropy above (about 15% at 80 kOe) is due to the positive contribution, which achieves maximum values at the magnetic field direction close to $\mathbf{H}\| [001]$. The anisotropy of the charge carrier scattering is interpreted in terms of the cooperative dynamic Jahn–Teller effect at В12 clusters.
Received: 09.11.2017
Citation:
N. E. Sluchanko, A. L. Khoroshilov, A. V. Bogach, V. V. Voronov, V. V. Glushkov, S. V. Demishev, V. N. Krasnorussky, K. M. Krasikov, N. Yu. Shitsevalova, V. B. Philipov, “Magnetoresistance scaling and the anisotropy of charge carrier scattering in the paramagnetic phase of Ho$_{0.8}$Lu$_{0.2}$B$_{12}$ cage glass”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:1 (2018), 35–41; JETP Letters, 107:1 (2018), 30–36
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https://www.mathnet.ru/eng/jetpl5463 https://www.mathnet.ru/eng/jetpl/v107/i1/p35
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