دورية أكاديمية
Quasiparticle dynamics across the full Brillouin zone of Bi2Sr2CaCu2O8+δ traced with ultrafast time and angle-resolved photoemission spectroscopy
| العنوان: | Quasiparticle dynamics across the full Brillouin zone of Bi2Sr2CaCu2O8+δ traced with ultrafast time and angle-resolved photoemission spectroscopy |
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| المؤلفون: | Georgi L. Dakovski, Tomasz Durakiewicz, Jian-Xin Zhu, Peter S. Riseborough, Genda Gu, Steve M. Gilbertson, Antoinette Taylor, George Rodriguez |
| المصدر: | Structural Dynamics, Vol 2, Iss 5, Pp 054501-054501-8 (2015) |
| بيانات النشر: | AIP Publishing LLC and ACA |
| سنة النشر: | 2015 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Crystallography, QD901-999 |
| الوصف: | 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. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2329-7778 |
| العلاقة: | http://dx.doi.org/10.1063/1.4933133Test; https://doaj.org/toc/2329-7778Test; https://doaj.org/article/7a5e1a9006684ee8b0441aa47c8e1115Test |
| DOI: | 10.1063/1.4933133 |
| الإتاحة: | https://doi.org/10.1063/1.4933133Test https://doaj.org/article/7a5e1a9006684ee8b0441aa47c8e1115Test |
| رقم الانضمام: | edsbas.30386F9E |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 23297778 |
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| DOI: | 10.1063/1.4933133 |