Although the superconducting critical temperatures of dozens of copper-based superconductors synthesized so far are different, they all have similar layered atomic structures. If these layered copper-based superconductors are thinned to the two-dimensional limit, will they still have the same high temperature Superconducting properties?
A few days ago, scientists in China proved for the first time that single-layer copper-based superconductors under the two-dimensional limit have the same superconducting properties as bulk copper-based superconductors. Combining transport and scanning tunnel microscopy and spectroscopy data, the team finally found that the single layer Bi-2212 under the two-dimensional limit already had all the factors necessary for high-temperature superconductivity. This conclusion provides a more solid experimental basis for the effectiveness of the two-dimensional theoretical model of high-temperature superconductivity and the surface research of existing high-temperature superconducting bulk materials. In addition to the conclusions, this work is also very valuable for the technical exploration of the research method of extremely unstable two-dimensional materials, which expands the horizon of research on two-dimensional materials. The research results were published online in the form of research articles in the main journal of the international academic journal Nature.