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arXiv · 1001.0573

Theory of time-resolved spectral function in high-temperature superconductors with bosonic modes

Jianmin Tao·Jian-Xin Zhu
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Abstract

We develop a three-temperature model to simulate the time dependence of electron and phonon temperatures in high-temperature superconductors displaying strong anistropic electron-phonon coupling. This model not only takes the tight-binding band structure into account, but also is valid in superconducting state. Based on this model, we calculate the time-resolved spectral function via the double-time Green's functions. We find that the dip-hump structure evolves with the time delay. More interestingly, new phononic structures are obtained when the phonons are excited by a laser field. This signature may serve as a direct evidence for electron-vibration mode coupling.

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Jianmin Tao, Jian-Xin Zhu. 2010-01-04. Theory of time-resolved spectral function in high-temperature superconductors with bosonic modes. https://doi.org/10.1103/physrevb.81.224506

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