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Streaking and Wigner time delays in photoemission from atoms and surfaces
Streaking Wigner photoemission atoms and surfaces
2011/9/13
Streaked photoemission metrology allows the observation of an apparent relative time delay between the detection of photoelectrons from different initial electronic states. This relative delay is obta...
Failure of t-J models in describing doping evolution of spectral weight in x-ray scattering, optical and photoemission spectra of the cuprates
t-J models x-ray scattering optical and photoemission spectra cuprates
2010/11/19
We have analyzed experimental evidence for an anomalous transfer of spectral weight from high
to low energy scales in both electron and hole doped cuprates as a function of doping. X-ray
scattering,...
Electronic Structure Studies of Detwinned BaFe$_2$As$_2$ by Photoemission
Electronic Structure Studies Photoemission
2010/11/18
We performed angle resolved photoelectron spectroscopy (ARPES) studies on mechanically de-
twinned BaFe2As2. We observe clear band dispersions and the shapes and characters of the Fermi
surfaces are...
Reply to Comment on Circular Dichroism in the Angle-Resolved Photoemission Spectrum of the High-Temperature Bi2Sr2CaCu2O8 Superconductor http://arxiv.org/abs/1004.1648
Circular Dichroism High-Temperature
2010/11/22
Our purpose in Ref. 1 was to carry out a realistic first-principles angle-resolved photointensity (ARPES) com-putation to assess the importance of geometric effects in inducing dichroism in the curpat...
Strong-field above-threshold photoemission from sharp metal tips
Strong-field above-threshold photoemission sharp metal tips
2010/10/20
We present energy-resolved measurements of electron emission from sharp metal tips driven with
low energy pulses from a few-cycle laser oscillator. We observe above-threshold photoemission with a pho...
X-Ray Photoemission Study of the Oxidation of Hafnium
X-Ray Photoemission Oxidation of Hafnium
2009/9/4
About 20 Å of hafnium were deposited on silicon substrates using the electron beam evaporation technique. Two types of samples were investigated. In one type, the substrate was kept at the...
Inverse Photoemission Spectroscopy of Multiwall Carbon Nanotubes
Multiwall carbon nanotubes Inverse photoemission
2010/9/25
Multiwall Carbon Nanotubes (MWCNTs) were synthesized by Chemical Vapor Deposition (CVD). Two different procedures were used to grow MWCNT films roughly, aligned in the direction normal to the SiO2/Si(...
Internal Photoemission Spectroscopy for A PtSi/p-Si Schottky Junction
Photoemission Spectroscopy A PtSi/p-Si Schottky Junction
2010/4/15
Properties of internal photoemission in a PtSi-Si Schottky junction have been studied. The traditional Fowler plot of a detector's photoyield is found to be nonlinear for values close to the barrier h...