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Asymmetries in the electron-hole pair dynamics and strong Mott pseudogap effect in the phase diagram of cuprates

M. Z. Hasan·Y. Li·D. Qian·Y. -D. Chuang·H. Eisaki·S. Uchida·Y. Kaga·T. Sasagawa·H. Takagi
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Abstract

Electron behavior in doped Mott systems continues to be a major unsolved problem in quantum many-electron physics. A central issue in understanding the universal Mott behavior in a variety of complex systems is to understand the nature of their electron-hole pair excitation modes. Using high resolution resonant inelastic x-ray scattering (RIXS) we resolve the momentum dependence of electron-hole pair excitations in two major classes of doped copper oxides which reveals a Mott pseudogap over the full Brillouin zone and over the entire phase diagram. The pair bandwidth and zone-boundary pair velocity renormalize on either sides of the phase diagram at very different rates indicating strong particle-hole doping asymmetries observed for the first time.

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M. Z. Hasan, Y. Li, D. Qian, Y. -D. Chuang, H. Eisaki, S. Uchida, Y. Kaga, T. Sasagawa, H. Takagi. 2004-06-25. Asymmetries in the electron-hole pair dynamics and strong Mott pseudogap effect in the phase diagram of cuprates. https://arxiv.org/abs/cond-mat/0406654

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