从电子色散计算Bi2Sr2CaCu2O8的热力学性质
Thermodynamic properties of Bi2Sr2CaCu2O8 calculated from the electronic dispersion
摘要：
用角分辨光电子能谱学（ARPES）测量了Bi_2Sr_2CaCu_2O（8+d）的电子色散。从这个分散，我们计算熵和超流体密度。即使没有可调参数，我们得到了一个特殊的匹配与实验数据在整个相图，从而间接证实了ARPES和热力学数据。在过掺杂区域中，范霍夫奇异性被交叉，在那里的超流密度具有独特的线性T温度依赖性。
英文摘要：
The electronic dispersion for Bi2Sr2CaCu2O(8+d) has been determined from angle-resolved photoelectron spectroscopy (ARPES). From this dispersion we calculate the entropy and superfluid density. Even with no adjustable parameters we obtain an exceptional match with experimental data across the entire phase diagram, thus indirectly confirming both the ARPES and thermodynamic data. The van Hove singularity is crossed in the overdoped region giving a distinctive linear-in-T temperature dependence in the superfluid density there.
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