Results 51 to 60 of about 258,084 (292)

Ab initio theory of electron-phonon mediated ultrafast spin relaxation of laser-excited hot electrons in transition-metal ferromagnets [PDF]

, 2013
We report a computational theoretical investigation of electron spin-flip scattering induced by the electron-phonon interaction in the transition-metal ferromagnets bcc Fe, fcc Co and fcc Ni.
Battiato, M., Carva, K., Legut, D., Oppeneer, P. M.   +3 more
core   +3 more sources

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Method of successive separation and summing of multiplicative diagrams of mass operator for the multi-level quasiparticle interacting with polarization phonons

Condensed Matter Physics, 2019
The theory of renormalized energy spectrum of a multi-level quasiparticle interacting with polarization phonons at T = 0 K is developed within the Feynman-Pines diagram technique in a new approach.
M.V. Tkach, Ju.O. Seti, O.M. Voitsekhivska, V.V. Gutiv   +3 more
doaj   +1 more source

Effect of Tensile Strain on Thermal Conductivity in Monolayer Graphene Nanoribbons: A Molecular Dynamics Study

Sensors, 2013
The thermal conductivity of monolayer graphene nanoribbons (GNRs) with different tensile strain is investigated by using a nonequilibrium molecular dynamics method.
Zhongzhou Li, Acheng Pan, Cunlu Yin, Chengyu Hou, Jianjun Sha, Guoqiang Wu, Lin Yang, Xiaodong He, Jianwei Zhang, Yubai Liu   +9 more
doaj   +1 more source

Influence of electron-acoustic phonon scattering on intensity power broadening in a coherently driven quantum-dot cavity system

, 2011
We present a quantum optics formalism to study intensity power broadening of a semiconductor quantum dot interacting with an acoustic phonon bath and a high $Q$ microcavity. Power broadening is investigated using a time-convolutionless master equation in
Hughes, Stephen, Roy, Chiranjeeb
core   +2 more sources

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Momentum-Resolved View of Electron-Phonon Coupling in Multilayer WSe$_2$

, 2017
We investigate the interactions of photoexcited carriers with lattice vibrations in thin films of the layered transition metal dichalcogenide (TMDC) WSe$_2$.
Bertoni, Roman, Brumme, Thomas, Ernstorfer, Ralph, Hübener, H., Rubio, Angel, Vasileiadis, Thomas, Waldecker, Lutz, Zahn, Daniela   +7 more
core   +3 more sources

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

Interplay between electron-phonon and Coulomb interactions in cuprates

, 2007
Evidence for strong electron-phonon coupling in high-Tc cuprates is reviewed, with emphasis on the electron and phonon spectral functions. Effects due to the interplay between the Coulomb and electron-phonon interactions are studied.
Alexandrov A S, Alexandrov A S, Auerbach A, Benedetti P, Bohnen K-P, Brunner M, Bäuml B, Calvani P, Cataudella V de Filippis G Mishchenko A Sand Nagaosa N, Devereaux T P, Devreese J T, Egami T, Egami T, Fehske H, Fink J, Franck J P, Fu H C, Giustino F Cohen M L Louie S G, Gweon G-H Sasagawa T Takagi H Lee D-H Lanzara A, Heid R Bohnen K-P Zeyher R Manske D, Iwasawa H Douglas J F, Leung P W, Macridin A Moritz B Jarrell M Maier T, Mahan G D, Manske D, Mishchenko A S, Norman M R, Norman M R, O Gunnarsson, O Rösch, Opel M, Pintschovius L, Pintschovius L, Rashba E, Röder H, Rösch O, Scalapino D J, Timusk T, Tohyama T, Toschi A Capone M, Yoshida T, Zhou X J Cuk T Devereaux T Nagaosa N Shen Z-X   +41 more
core   +1 more source

Large-amplitude chirped coherent phonons in tellurium mediated by ultrafast photoexcited carrier diffusion [PDF]

, 2010
We report femtosecond time-resolved reflectivity measurements of coherent phonons in tellurium performed over a wide range of temperatures (3K to 296K) and pump laser intensities. A totally symmetric A$_{1}$ coherent phonon at 3.6 THz responsible for the
A. K. Sood, H. Dember, J. Shah, M. Anija, N. Kamaraju, Sunil Kumar   +5 more
core   +2 more sources