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arXiv · 1005.1452

Direct Determination of Electron-Phonon Coupling Matrix Element in a Correlated System

Huajun Qin·Junren Shi·Yanwei Cao·Kehui Wu·Jiandi Zhang·E. W. Plummer·J. Wen·Z. J. Xu·G. D. Gu·Jiandong Guo
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Abstract

High-resolution electron energy loss spectroscopy measurements have been carried out on an optimally doped cuprate Bi2Sr2CaCu2O8+δ. The momentum-dependent linewidth and the dispersion of an A1 optical phonon are obtained. Based on these data as well as the detailed knowledge of the electronic structure from angle-resolved photoemission spectroscopy, we develop a scheme to determine the full structure of electron-phonon coupling for a specific phonon mode, thus providing a general method for directly resolving the EPC matrix element in systems with anisotropic electronic structures.

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Huajun Qin, Junren Shi, Yanwei Cao, Kehui Wu, Jiandi Zhang, E. W. Plummer, J. Wen, Z. J. Xu, G. D. Gu, Jiandong Guo. 2010-05-10. Direct Determination of Electron-Phonon Coupling Matrix Element in a Correlated System. https://doi.org/10.1103/physrevlett.105.256402

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