Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Riffe, D. Mark"'
Autor:
Riffe, D. Mark
The interaction of electromagnetic fields with a solid is characterized by several interconnected response functions: the dielectric function $\varepsilon(\omega)$, index of refraction $N(\omega)$, conductivity $\sigma(\omega)$, and optical impedance
Externí odkaz:
http://arxiv.org/abs/1806.05158
Autor:
Riffe, D. Mark, Wilson, Richard B.
Publikováno v:
All Physics Faculty Publications
We present an embedded-atom-method (EAM) model that accurately describes vibrational dynamics in the alkali metals Li, Na, K, Rb, and Cs. Bulk dispersion curves, frequency-moment Debye temperatures, and temperature-dependent entropy Debye temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::5affa63be9c4a52b0810842df9dff100
https://digitalcommons.usu.edu/physics_facpub/2022
https://digitalcommons.usu.edu/physics_facpub/2022
Autor:
Wilson, R. B., Riffe, D. Mark
Publikováno v:
All Physics Faculty Publications
We present an embedded-atom-method (EAM) model that accurately describes the vibrational dynamics in the alkali metals Li, Na, K, Rb and Cs. The bulk dispersion curves, frequency-moment Debye temperatures and temperature-dependent entropy Debye tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::7701bba3de017feb50b2d09bdbe68894
https://digitalcommons.usu.edu/physics_facpub/1498
https://digitalcommons.usu.edu/physics_facpub/1498
Autor:
Riffe, D. Mark
Publikováno v:
All Physics Faculty Publications
Starting from the quantum-mechanical Fano-Anderson Hamiltonian, we derive classical equations of motion for coordinates associated with the discrete and continuum states. The frequency-dependent absorption spectrum associated with this classical syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::705d83dcb6f8d0747b713fc86a32ef0a
https://digitalcommons.usu.edu/physics_facpub/1124
https://digitalcommons.usu.edu/physics_facpub/1124
Publikováno v:
All Physics Faculty Publications
We have measured W 4f7/2 core-level photoemission spectra from W(1 1 0) in the presence of Pd overlayers for coverages up to ∼1 pseudomorphic monolayer (ML). At coverages close to 0.05 ML a striking change in the W core-level spectrum is observed,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::ca5b5632a2ec2e7ad4e6caefba8b5310
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2121&context=physics_facpub
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2121&context=physics_facpub
Autor:
Riffe, D. Mark, Sabbah, A. J.
Publikováno v:
All Physics Faculty Publications
Using 28-fs, 800-nm laser pulses we have coherently excited and subsequently probed, with time-dependent reflectivity, the Si zone-center optic phonon. The phonon-induced reflectivity change ΔR∕R is well described by the response of an underdamped
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::e9e86b5130a114d911c12e4d0ef2588b
https://digitalcommons.usu.edu/physics_facpub/1120
https://digitalcommons.usu.edu/physics_facpub/1120
Autor:
Sabbah, A. J., Riffe, D. Mark
Publikováno v:
All Physics Faculty Publications
We have studied the ultrafast optical response of native-oxide terminated Si(001) with pump-probe reflectivity using 800 nm, 28 fs pulses at an excitation density of (5.5±0.3)×1018cm-3. Time-dependent reflectivity changes comprise third-order-respo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::d66532ce459f6581b3900e5ddbd42259
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2118&context=physics_facpub
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2118&context=physics_facpub
Autor:
Riffe, D. Mark
Publikováno v:
All Physics Faculty Publications
The conductivity effective masses of electrons and holes in Si are calculated for carrier temperatures from 1 to 3000 K. The temperature dependence of the electron mass is calculated by use of a phenomenological model of conduction-band nonparabolici
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::6340efc2eda0965fe0f58735848a4961
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2117&context=physics_facpub
https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=2117&context=physics_facpub
Autor:
Riffe, D. Mark, Wertheim, G. K.
Publikováno v:
All Physics Faculty Publications
High-resolution core-level photoemission data from the 1s level of Li(110) have been obtained between 77 and 280 K. Analysis of the data reveals a significant difference in the zero-temperature phonon broadening between the bulk and surface atoms but
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::8ca967f10375166962965de3f88efb4b
https://digitalcommons.usu.edu/physics_facpub/1116
https://digitalcommons.usu.edu/physics_facpub/1116
Autor:
Sabbah, A. J., Riffe, D. Mark
Publikováno v:
All Physics Faculty Publications
We demonstrate that ultrafast pump–probe reflectivity measurements from bulk Si samples using a Ti:sapphire femtosecond oscillator (λ=800 nm) can be used to measure the Si surface recombination velocity. The technique is sensitive to recombination
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1459::6a1f339878a60b9c348f379329898d48
https://digitalcommons.usu.edu/physics_facpub/1117
https://digitalcommons.usu.edu/physics_facpub/1117