2010/01/04 by Jianmin Tao, Jian-Xin Zhu, Jian‐Xin Zhu
Materials Science · Physics and Astronomy · #Anisotropy #Condensed matter physics #Coupling (piping) #Electron #Function (biology) #High-temperature superconductivity #Magnetic and transport properties of perovskites and related materials #Materials science #Mode (computer interface) #Phonon #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Spectral function #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.81.224506
5 pages, 3 figures
arxiv created 2010/01/04 · openalex publication_date 2010/06/08 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We develop a three-temperature model to simulate the time dependence of the electron and phonon temperatures in high-temperature superconductors displaying strong anisotropic electron-phonon coupling. This model not only takes the tight-binding band structure into account but also is valid in the 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, an unusual structure is obtained when the phonons are pumped directly. This finding may serve as a direct evidence for electron-vibration mode coupling.