Changes in the self-energy and d-wave pairing strength with doping in overdoped La2-xSrxCuO4

Article

关键词: 2-DIMENSIONAL HUBBARD-MODEL;    HIGH-TEMPERATURE SUPERCONDUCTORS;    CONSERVING APPROXIMATIONS;    ELECTRON-SYSTEMS;    BI2SR2CACU2O8+DELTA;   

DOI  :  10.1103/PhysRevB.88.134509

来源: SCIE

【 摘 要 】

Angle resolved photoemission spectroscopy studies of the overdoped cuprate superconductor La2-xSrxCuO4 find only small changes in the near nodal electron self-energy over a spectral range of several hundred meV as the doping increases from x = 0.2 to x = 0.3 and the superconducting transition temperature T-c decreases from 32 to 0 K. These measurements put constraints on the structure of the electron-electron interaction. Here we show that a spin-fluctuation interaction leads to behavior which is consistent with these experimental results.

【 授权许可】

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