ENERGY RELAXATION AND DEPHASING TIMES OF EXCITED ELECTRONS IN BI2SR2CACU2O8-PHOTON TIME-RESOLVED PHOTOEMISSION(DELTA FROM INTERFEROMETRIC 2)

Authors
NESSLER W OGAWA S NAGANO H PETEK H SHIMOYAMA J NAKAYAMA Y KISHIO K
Citation
W. Nessler et al., ENERGY RELAXATION AND DEPHASING TIMES OF EXCITED ELECTRONS IN BI2SR2CACU2O8-PHOTON TIME-RESOLVED PHOTOEMISSION(DELTA FROM INTERFEROMETRIC 2), Journal of electron spectroscopy and related phenomena, 88, 1998, pp. 495-501
Citations number
8
Categorie Soggetti
Spectroscopy
Journal title
Journal of electron spectroscopy and related phenomena → ACNP
ISSN journal
03682048
Volume
88
Year of publication
1998
Pages
495 - 501
Database
ISI
SICI code
0368-2048(1998)88:<495:ERADTO>2.0.ZU;2-G
Abstract
The electron dynamics in Bi2Sr2CaCu2O8+delta are investigated with int erferometric 2-photon time-resolved photoemission. By decomposing the interferometric 2-pulse correlation into oscillating and non-oscillati ng components energy relaxation times can be obtained for excited elec trons above the Fermi level, T-1, and dephasing times of electron-hole pairs, T-2. The procedure to determine T-1 and T-2 is discussed and f irst results on the electron energy relaxation time in a high temperat ure superconductor are presented. (C) 1998 Elsevier Science B.V.