Fabrication and transport properties of two dimensional Bi2Sr2Ca2Cu3O10+δ micro-bridge
Fabrication and transport properties of two dimensional Bi2Sr2Ca2Cu3O10+δ micro-bridge
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DOI：
10.1063/5.0075947
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Lixing You
中科院分区：
文献类型：
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作者：
A. B. Yu;Z. Huang;Wei Peng;H. Li;C. T. Lin;Xiaofu Zhang;Lixing You
Ultra-thin high-temperature superconducting films have attracted continuous interest due to their potential electronic applications, which also provide a unique platform of novel physics and properties in the two-dimensional limit. We, here, realized fabrication of two-unit-cell-thick micro-bridges from mechanically exfoliated ultra-thin Bi2Sr2Ca2Cu3O10+δ (Bi2223) single crystals and systematically investigated their transport properties. The two-dimensional superconducting nature is verified by the existence of the Berezinskii–Kosterlitz–Thouless transition, which is simultaneously revealed by current-voltage properties and the zero-field temperature dependence of resistance. Comparing with Bi2223 bulk crystal, a Bi2223 micro-bridge shows a slight lower upper critical field but pronounced improvement in the critical current density. Our findings indicate that the ultra-thin Bi2223 single crystal is highly prospective for both scientific investigations of unconventional superconductivity and applications of high Tc superconducting devices.
