Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 78: Correlated Electrons: Poster Session
TT 78.55: Poster
Donnerstag, 10. März 2016, 15:00–18:30, Poster D
Crystal growth and characterization of Ir-Te compounds — •Philipp Kurzhals, Frank Weber, Diego Zocco, Peter Adelmann, Michael Merz, Thomas Wolf, Sebastian Kuntz, and Kai Grube — Karlsruhe Institute of Technology, Institute for Solid State Physics, Karlsruhe, Germany
IrTe2 is distinguished by a structural phase transition whose origin is not understood up to the present day [1]. We grew crystals using the self-flux method starting from the reagents iriudium and tellurium and got specimen with varying amounts of IrTe2 and Ir3Te8, analyzed by x-ray powder diffraction. We studied the transition near T = 280 K in magnetization measurements down to T = 1.8 K probing also for superconductivity, which was reported for intercalated samples [2]. Results indicate that the structural transition happens over an extended range in temperature and superconductivity is absent in our samples.
Ir3Te8 is not studied to such an extent as IrTe2. In previous publications a structural phase transition is reported [3]. We characterized the transition by performing magnetization measurements and X-ray diffraction.
G. L. Pascut et al., PRL 112, 086402 (2014)
J. J. Yang et al., PRL 108, 116402 (2012)
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