An organizing principle for two-dimensional strongly correlated superconductivity

被引:58
|
作者
Fratino, L. [1 ]
Semon, P. [2 ,3 ]
Sordi, G. [1 ]
Tremblay, A. -M. S. [2 ,3 ,4 ]
机构
[1] Univ London, Dept Phys, Royal Holloway, Egham TW20 0EX, Surrey, England
[2] Univ Sherbrooke, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada
[3] Univ Sherbrooke, Regrp Quebequois Mat Pointe, Sherbrooke, PQ J1K 2R1, Canada
[4] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada
来源
SCIENTIFIC REPORTS | 2016年 / 6卷
基金
加拿大自然科学与工程研究理事会;
关键词
HIGH-TEMPERATURE SUPERCONDUCTIVITY; D-WAVE SUPERCONDUCTIVITY; CONDENSATION ENERGY; WIDOM LINE; SYSTEMS; LIMIT;
D O I
10.1038/srep22715
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Superconductivity in the cuprates exhibits many unusual features. We study the two-dimensional Hubbard model with plaquette dynamical mean-field theory to address these unusual features and relate them to other normal-state phenomena, such as the pseudogap. Previous studies with this method found that upon doping the Mott insulator at low temperature a pseudogap phase appears. The low-temperature transition between that phase and the correlated metal at higher doping is first-order. A series of crossovers emerge along the Widom line extension of that first-order transition in the supercritical region. Here we show that the highly asymmetric dome of the dynamical mean-field superconducting transition temperature T-c(d), the maximum of the condensation energy as a function of doping, the correlation between maximum T-c(D) and normal-state scattering rate, the change from potential-energy driven to kinetic-energy driven pairing mechanisms can all be understood as remnants of the normal state first-order transition and its associated crossovers that also act as an organizing principle for the superconducting state.
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页数:6
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