Loading...
Quasiparticle dynamics across the full Brillouin zone of Bi<inf>2</inf>Sr<inf>2</inf>CaCu<inf>2</inf>O<inf>8+δ</inf> traced with ultrafast time and angle-resolved photoemission spectroscopy
Dakovski, GL Durakiewicz, T Zhu, JX Riseborough, PS Gu, G Gilbertson, SM Taylor, A Rodriguez, G
Dakovski, GL
Durakiewicz, T
Zhu, JX
Riseborough, PS
Gu, G
Gilbertson, SM
Taylor, A
Rodriguez, G
Citations
Altmetric:
Genre
Journal Article
Date
2015-09-01
Advisor
Committee member
Group
Department
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
10.1063/1.4933133
Abstract
© 2015 Author(s). A hallmark in the cuprate family of high-temperature superconductors is the nodal-antinodal dichotomy. In this regard, angle-resolved photoemission spectroscopy (ARPES) has proven especially powerful, providing band structure information directly in energy-momentum space. Time-resolved ARPES (trARPES) holds great promise of adding ultrafast temporal information, in an attempt to identify different interaction channels in the time domain. Previous studies of the cuprates using trARPES were handicapped by the low probing energy, which significantly limits the accessible momentum space. Using 20.15 eV, 12 fs pulses, we show for the first time the evolution of quasiparticles in the antinodal region of Bi2Sr2CaCu2O8+δ and demonstrate that non-monotonic relaxation dynamics dominates above a certain fluence threshold. The dynamics is heavily influenced by transient modification of the electron-phonon interaction and phase space restrictions, in stark contrast to the monotonic relaxation in the nodal and off-nodal regions.
Description
Citation
Citation to related work
AIP Publishing
Has part
Structural Dynamics
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu