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Kargin, J. B.
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booksection
Low Temperature Resistivity of the Rare Earth Diborides (Er, Ho, Tm)B$_2$
Abstract
The discovery of superconductivity in MgB2 sparked much interest in the diborides and led to further discoveries in this class of materials. Attention has focussed on the transitions metal diborides and the rare-earth diborides have remained sparsely investigated. Here we present electrical transport in polycrystalline samples of ErB2, TmB2 and HoB2 as a function of temperature down to 0.1 K. Particularly interesting is the large difference in the temperature dependence of resistivity, above and below the clear magnetic ordering temperature of 13.8, 9 and 7.5 K for ErB2, HoB2 and TmB2 respectively.