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Temperature-induced spectral weight transfer in Bi_2Sr_2CaCu_2O_{8+delta}: a conventional view

J. C. Campuzano·H. Ding·H. Fretwell·J. Mesot·A. Kaminski·T. Yokoya·T. Takahashi·T. Mochiku·K. Kadowaki
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Abstract

In contrast with the recent photoemission observations by Shen et al. of anomalous temperature-induced momentum-dependent spectral weight transfer in Bi_2Sr_2CaCu_2O_{8+delta}, we find that in the same material, in spite of the unusual spectral lineshape change between superconducting and normal states, the integrated spectral weight displays minimum variation as a function of temperature, which is in agreement with the sum rule of angle-resolved photoemission: the integrated spectral weight is proportional to the momentum density, n(k).

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J. C. Campuzano, H. Ding, H. Fretwell, J. Mesot, A. Kaminski, T. Yokoya, T. Takahashi, T. Mochiku, K. Kadowaki. 1998-11-25. Temperature-induced spectral weight transfer in Bi_2Sr_2CaCu_2O_{8+delta}: a conventional view. https://arxiv.org/abs/cond-mat/9811349

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