Coherent phonon dynamics of normal metal in ultrafast spectroscopy: Non-equilibrium gauge invariant Green's function approach
| Autor: | Hyun C. Lee |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Phonon Invariant (physics) Condensed Matter Physics Laser 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Electronic Optical and Magnetic Materials law.invention Metal law Quantum mechanics visual_art Electric field Quantum electrodynamics 0103 physical sciences visual_art.visual_art_medium Gauge theory 010306 general physics Spectroscopy Ultrashort pulse |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 81:182-191 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2016.03.007 |
| Popis: | The phonon dynamics of normal metal in the coherent regime of ultrafast spectroscopy is studied based on the non-equilibrium gauge invariant Green's function method. The non-equilibrium phonon self-energy is computed explicitly as a function of time in a gauge invariant way up to the second order of electric field of applied laser pulse. The extension beyond the coherent regime and the incorporation of correlation effects are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect