科研之友
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摘要
In the present work, we report the new findings on the doping level dependence of the phase coherence between superconducting Bi2Sr2CaCu2O8+delta (Bi-2212) grains. The experimental results from the strongly underdoped and overdoped regimes deviated from the expectation based on the doping level dependence of the superfluid density at T = 0K. These findings appear to be governed by interplay between competing orders inside the superconducting dome of cuprate superconductors. Two quantum critical points are likely to exist at the underdoped and overdoped regimes beneath the superconducting dome.
- 出版日期2015-5
