Crystal Growth and Characterization of HgBa2Ca2Cu3O8+δ Superconductor with the Highest Critical Temperature at Ambient Pressure - Archive ouverte HAL Access content directly
Journal Articles Inorganic Chemistry Year : 2017

Crystal Growth and Characterization of HgBa2Ca2Cu3O8+δ Superconductor with the Highest Critical Temperature at Ambient Pressure

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Abstract

We report an original procedure for the elaboration of very high quality single crystals of superconducting HgBa2Ca2Cu3O8+δ mercury cuprates. These single crystals are unique with very high quality surface paving the way for spectroscopic, transport and thermodynamic probes in order to understand the hole-doped cuprate phase diagram. The superconductivity transition width of about 2 K indicates they are homogeneous. Annealing allows to optimize Tc up to Tc max = 133 K. We show for the first time that with adequate heat treatment, Hg-1223 can be largely under-doped and its doping level controlled. Importantly, the crystal structure was studied in detail by single crystal X-ray diffraction, and we have identified the signature of the under-doping by a detailed sample characterization and micro-Raman spectroscopy measurements.
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Dates and versions

cea-01573932 , version 1 (11-08-2017)

Licence

Attribution - CC BY 4.0

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Bastien Loret, Anne Forget, Jean-Baptiste Moussy, Sylvie Poissonnet, Patrick Bonnaillie, et al.. Crystal Growth and Characterization of HgBa2Ca2Cu3O8+δ Superconductor with the Highest Critical Temperature at Ambient Pressure. Inorganic Chemistry, 2017, 56, pp.9396-9399. ⟨10.1021/acs.inorgchem.7b01372⟩. ⟨cea-01573932⟩
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