Crystal Growth and Characterization of HgBa2Ca2Cu3O8+�� Superconductor with the Highest Critical Temperature at Ambient Pressure
| Autor: | Loret, Bastien, Forget, Anne, Moussy, Jean-Baptiste, Poissonnet, Sylvie, Bonnaillie, Patrick, Collin, Gaston, Thu��ry, Pierre, Sacuto, Alain, Colson, Doroth��e |
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| Rok vydání: | 2018 |
| Předmět: | |
| DOI: | 10.48550/arxiv.1808.00228 |
| Popis: | We report an original procedure for the elaboration of very high quality single crystals of superconducting HgBa2Ca2Cu3O8+�� 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. 4 pages, 3 figures, see supporting information for details |
| Databáze: | OpenAIRE |
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