论文标题
在电子特异性热中显示“成对的”是如何揭示的
How 'pairons' are revealed in the electronic specific heat of cuprates
论文作者
论文摘要
了解高$ T_C $ CUPRATE超导体的热力学特性是建立令人满意的这些材料理论的关键步骤。电子特定的热量是高度非常规的，明显的非BC，具有显着的兴奋剂依赖性特征，范围远远超过$ t_c $。 Pairon概念在其局部抗铁磁环境中绑定了孔，已成功地描述了隧道和光发射光谱。在本文中，我们表明该模型在整个温度掺杂相图中解释了熵的独特特征和特定的热量。他们的解释明确连接到现有最多$ t^*$的伪随机与低于$ t_c $的超导状态。在被压倒式的情况下，特异性的热量以伴侣统计量为主导，同时掺杂掺杂，骨气激发和费米金准粒子共存。
Understanding the thermodynamic properties of high-$T_c$ 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 $T_c$. 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 $T_c$. 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.
