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arXiv · 1306.6433

Changes in the self-energy and d-wave pairing strength with doping in overdoped La(2-x)Sr(x)CuO4

Thomas Dahm·D. J. Scalapino
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Abstract

Angle resolved photoemission spectroscopy (ARPES) studies of the overdoped cuprate superconductor La$_{2-x}$Sr$_x$CuO$_4$ 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 32K to 0K. 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.

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Thomas Dahm, D. J. Scalapino. 2013-06-27. Changes in the self-energy and d-wave pairing strength with doping in overdoped La(2-x)Sr(x)CuO4. https://doi.org/10.1103/physrevb.88.134509

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