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Ultrafast electron relaxation in superconducting Bi(2)Sr(2)CaCu(2)O(8+delta) by time-resolved photoelectron spectroscopy.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Perfetti, Luca Loukakos, Panagiotis A. Lisowski, M. Bovensiepen, Uwe Eisaki, Hiroshi Wolf, Martin G. |
| Copyright Year | 2007 |
| Abstract | Time-resolved photoelectron spectroscopy is employed to study the dynamics of photoexcited electrons in optimally doped Bi{2}Sr{2}CaCu{2}O{8+delta} (Bi-2212). Hot electrons thermalize in less than 50 fs and dissipate their energy on two distinct time scales (110 fs and 2 ps). These are attributed to the generation and subsequent decay of nonequilibrium phonons, respectively. We conclude that 20% of the total lattice modes dominate the coupling strength and estimate the second momentum of the Eliashberg coupling function lambdaOmega{0}{2}=360+/-30 meV{2}. For the typical phonon energy of copper-oxygen bonds (Omega{0} approximately 40-70 meV), this results in an average electron-phonon coupling lambda<0.25. |
| Starting Page | 197001 |
| Ending Page | 197001 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1103/PhysRevLett.99.197001 |
| PubMed reference number | 18233106 |
| Journal | Medline |
| Volume Number | 99 |
| Issue Number | 19 |
| Alternate Webpage(s) | http://www.iiassvietri.it/down/XXTC/PhysRevLett.99.197001.pdf |
| Alternate Webpage(s) | https://doi.org/10.1103/PhysRevLett.99.197001 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
