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arXiv · 1604.06086

Spin glass in semiconducting KFe$_{1.05}$Ag$_{0.88}$Te$_{2}$ single crystals

Hyejin Ryu·Hechang Lei·B. Klobes·J. B. Warren·R. P. Hermann·C. Petrovic
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Abstract

We report discovery of KFe$_{1.05}$Ag$_{0.88}$Te$_{2}$ single crystals with semiconducting spin glass ground state. Composition and structure analysis suggest nearly stoichiometric I4/mmm space group but allow for the existence of vacancies, absent in long range semiconducting antiferromagnet KFe$_{0.85}$Ag$_{1.15}$Te$_{2}$. The subtle change in stoichometry in Fe/Ag sublattice changes magnetic ground state but not conductivity, giving further insight into the semiconducting gap mechanism.

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Hyejin Ryu, Hechang Lei, B. Klobes, J. B. Warren, R. P. Hermann, C. Petrovic. 2016-04-20. Spin glass in semiconducting KFe$_{1.05}$Ag$_{0.88}$Te$_{2}$ single crystals. https://doi.org/10.1103/physrevb.91.174517

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