scholarly journals Mapping momentum-dependent electron-phonon coupling and nonequilibrium phonon dynamics with ultrafast electron diffuse scattering

2018 ◽  
Vol 97 (16) ◽  
Author(s):  
Mark J. Stern ◽  
Laurent P. René de Cotret ◽  
Martin R. Otto ◽  
Robert P. Chatelain ◽  
Jean-Philippe Boisvert ◽  
...  
Keyword(s):  
Diffuse Scattering ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

scholarly journals Mapping momentum-dependent electron-phonon coupling and non-equilibrium phonon dynamics with ultrafast electron diffuse scattering

2019 ◽  
Vol 205 ◽  
pp. 08013
Author(s):  
Mark J. Stern ◽  
Laurent P. René de Cotret ◽  
Martin R. Otto ◽  
Robert P. Chatelain ◽  
Jean-Philippe Boisvert ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Energy Resolution ◽  
Brillouin Zone ◽  
Time Resolution ◽  
Diffuse Scattering ◽  
Phonon Coupling ◽  
Selection Rules ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics ◽  
Non Equilibrium

We show that ultrafast electron diffuse (inelastic) scattering provides a detailed, momentum-resolved view of electron-phonon and phonon-phonon coupling across the entire Brillouin zone. Ultrafast time-resolution and scattering selection rules can distinguish between phonon branches without energy-resolution.

Two-dimensional electronic spectroscopy of anharmonic molecular potentials

2018 ◽  
Vol 20 (3) ◽  
pp. 1642-1652 ◽  
Author(s):  
André Anda ◽  
Darius Abramavičius ◽  
Thorsten Hansen
Keyword(s):  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics ◽  
Molecular Potentials

Two-dimensional electronic spectroscopy (2DES) is a powerful tool in the study of coupled electron–phonon dynamics, yet very little is known about how nonlinearities in the electron–phonon coupling, arising from anharmonicities in the nuclear potentials, affect the spectra.

Phonon dynamics and electron–phonon coupling in pristine picene

2012 ◽  
Vol 14 (5) ◽  
pp. 1694-1699 ◽  
Author(s):  
Alberto Girlando ◽  
Matteo Masino ◽  
Ivano Bilotti ◽  
Aldo Brillante ◽  
Raffaele G. Della Valle ◽  
...  
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

scholarly journals Ultrafast Hot Phonon Dynamics in MgB2 Driven by Anisotropic Electron-Phonon Coupling

2020 ◽  
Vol 124 (7) ◽  
Author(s):  
Dino Novko ◽  
Fabio Caruso ◽  
Claudia Draxl ◽  
Emmanuele Cappelluti
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

scholarly journals Revealing momentum-dependent electron–phonon and phonon–phonon coupling in complex materials with ultrafast electron diffuse scattering

MRS Bulletin ◽  
2021 ◽  
Author(s):  
Hermann A. Dürr ◽  
Ralph Ernstorfer ◽  
Bradley J. Siwick
Keyword(s):  
Electron Scattering ◽  
Diffuse Scattering ◽  
Degrees Of Freedom ◽  
Significant Contribution ◽  
Electronic Charge ◽  
Phonon Coupling ◽  
Complex Materials ◽  
Phonon Dynamics ◽  
Properties Of Materials ◽  
Photoinduced Changes

Abstract Despite their fundamental role in determining many important properties of materials, detailed momentum-dependent information on the strength of electron–phonon and phonon–phonon coupling across the entire Brillouin zone has remained elusive. Ultrafast electron diffuse scattering (UEDS) is a recently developed technique that is making a significant contribution to these questions. Here, we describe both the UEDS methodology and the information content of ultrafast, photoinduced changes in phonon-diffuse scattering from single-crystal materials. We present results obtained from Ni, WSe2, and TiSe2, materials that are characterized by a complex interplay between electronic (charge, spin) and lattice degrees of freedom. We demonstrate the power of this technique by unraveling carrier–phonon and phonon–phonon interactions in both momentum and time and following nonequilibrium phonon dynamics in detail on ultrafast time scales. By combining ab initio calculations with ultrafast diffuse electron scattering, insights into electronic and magnetic dynamics that impact UEDS indirectly can also be obtained. Graphic Abstract

Coherent Phonon Dynamics in Semiconducting Carbon Nanotubes: A Quantitative Study of Electron-Phonon Coupling

2009 ◽  
Vol 102 (12) ◽  
Author(s):  
Larry Lüer ◽  
Christoph Gadermaier ◽  
Jared Crochet ◽  
Tobias Hertel ◽  
Daniele Brida ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantitative Study ◽  
Coherent Phonon ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Pronounced exciton and coherent phonon dynamics in BiI3

2018 ◽  
Vol 20 (16) ◽  
pp. 10677-10685 ◽  
Author(s):  
Mirko Scholz ◽  
Kawon Oum ◽  
Thomas Lenzer
Keyword(s):  
Transient Absorption ◽  
Coherent Phonon ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Long-lived coherent oscillations in transient absorption signals of BiI3 suggest strong electron–phonon coupling in this material for photovoltaics.

Observation of Core Phonon in Electron–Phonon Coupling in Au25 Nanoclusters

2021 ◽  
Vol 12 (6) ◽  
pp. 1690-1695
Author(s):  
Zhongyu Liu ◽  
Yingwei Li ◽  
Wonyong Shin ◽  
Rongchao Jin
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Electron-phonon coupling in the magnetic Weyl semimetal ZrCo2Sn

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
I.Yu. Sklyadneva ◽  
R. Heid ◽  
P. M. Echenique ◽  
E. V. Chulkov
Keyword(s):  
Phonon Coupling ◽  
Weyl Semimetal ◽  
Electron Phonon Coupling
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