Single-Crystal Growth and Characterization of Cuprate Superconductor (Hg,Re)Ba_2Ca_2Cu_3O_8+δ
arxiv(2024)
摘要
We grew (Hg,Re)Ba_2Ca_2Cu_3O_8+δ ((Hg,Re)1223) single crystals
with good reproducibility via the single-step flux method using monoxides as
raw materials. A double-sealing method using a thick-walled quartz tube and a
stainless-steel container was adopted for explosion protection. The maximum
crystal size was approximately 1 mm x 1 mm in the ab plane and 0.04 mm in
thickness. The crystal was square-shaped, reflecting the tetragonal crystal
structure of (Hg,Re)1223. Magnetic susceptibility measurements indicated a
critical temperature of 130 K. The in-plane resistivity exhibited a linear
temperature dependence, indicating that the sample was close to optimal doping
level. The out-of-plane resistivity was also measured, and the anisotropy
parameter was 250-650 at 300 K.
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