Abstract Understanding the thermodynamic properties of high-Tc cuprate superconductors is a key step to establish a satisfactory theory of these materials. The electronic specific heat is highly unconventional, distinctly non-BCS, with remarkable doping-dependent features extending well beyond Tc. The pairon concept, bound holes in their local antiferromagnetic environment, has successfully described the tunneling and photoemission spectra. In this article, we show that the model explains the distinctive features of the entropy and specific heat throughout the temperature-doping phase diagram. Their interpretation connects unambiguously the pseudogap, existing up to T*, to the superconducting state below Tc. In the underdoped case, the specific heat is dominated by pairon excitations, following Bose statistics, while with increasing doping, both bosonic excitations and fermionic quasiparticles coexist.

中文翻译：

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如何在铜酸盐的电子比热中揭示“配对”

摘要 了解高温铜酸盐超导体的热力学性质是建立这些材料令人满意的理论的关键一步。电子比热非常非常规，明显非 BCS，具有显着的掺杂依赖性特征，远远超出 Tc。成对概念，即局部反铁磁环境中的束缚孔，已成功描述了隧道效应和光电发射光谱。在本文中，我们展示了该模型在整个温度掺杂相图中解释了熵和比热的独特特征。他们的解释明确地将存在于 T* 以内的赝隙与低于 Tc 的超导状态联系起来。在掺杂不足的情况下，比热由成对激发支配，遵循玻色统计，而随着掺杂的增加，