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Strange or normal metal in overdoped cuprates?

The phase diagram of high-temperature superconducting cuprates is characterized by a zero-resistance dome in a certain charge carrier doping range. For higher dopings — that is, in the so-called overdoped regime — electronic transport in cuprates is similar to that in normal metals. Now, Nigel E. Hussey et al. show that the strange-metal behaviour in cuprates extends to the overdoped regime. Their magnetotransport results demonstrate that electronic transport within the strange-metal phase comprises both coherent and incoherent contributions. The improved understanding of the strange-metal phase is not only relevant for cuprates but for many other correlated materials.

Nature Volume 595 Issue 7869

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