Topic
Photoemission spectroscopy
About: Photoemission spectroscopy is a research topic. Over the lifetime, 10821 publications have been published within this topic receiving 250888 citations. The topic is also known as: photoelectron spectroscopy & PES.
Papers published on a yearly basis
Papers
More filters
130 citations
TL;DR: Free energy calculations show that the C?
Abstract: Photoelectron spectroscopy and theoretical calculations are used to elucidate the structure of the Au?? - cluster. Although density functional calculations suggest that the high symmetry Ih cage structure of Au?? remains to be the lowest in energy for Au?? - at 0 K, the calculated photoelectron spectrum of a low-lying amorphous structure (C?) is found to agree best with the experiment. Free energy calculations show that the C? structure becomes the most stable isomer at higher temperatures, indicating the importance of entropy in determining the stability of clusters at finite temperatures.
130 citations
TL;DR: This work opens a route to functionalize the basal surface or edges of two-dimensional (2D) black phosphorus through site-selective chemical reactions and presents the opportunity to explore the synthesis of 2D phosphorene oxide by oxidation by oxidation.
Abstract: Phosphorene is emerging as an important two-dimensional semiconductor, but controlling the surface chemistry of phosphorene remains a significant challenge. Here, we show that controlled oxidation of phosphorene determines the composition and spatial distribution of the resulting oxide. We used X-ray photoemission spectroscopy to measure the binding energy shifts that accompany oxidation. We interpreted these spectra by calculating the binding energy shift for 24 likely bonding configurations, including phosphorus oxides and hydroxides located on the basal surface or edges of flakes. After brief exposure to high-purity oxygen or high-purity water vapor at room temperature, we observed phosphorus in the +1 and +2 oxidation states; longer exposures led to a large population of phosphorus in the +3 oxidation state. To provide insight into the spatial distribution of the oxide, transmission electron microscopy was performed at several stages during the oxidation. We found crucial differences between oxygen an...
130 citations
TL;DR: Interference patterns of a magnetically doped topological insulator Bi(2-x)Fe(x)Te(3+d) are studied by using Fourier transform scanning tunneling spectroscopy and it is revealed that the surface state survives far above the energy where angle-resolved photoemission spectroscopic finds the onset of continuum bulk bands.
Abstract: We study interference patterns of a magnetically doped topological insulator Bi2-xFexTe3+d by using Fourier transform scanning tunneling spectroscopy and observe several new scattering channels. A comparison with angle-resolved photoemission spectroscopy allows us to unambiguously ascertain the momentum-space origin of distinct dispersing channels along high-symmetry directions and identify those originating from time-reversal symmetry breaking. Our analysis also reveals that the surface state survives far above the energy where angle-resolved photoemission spectroscopy finds the onset of continuum bulk bands.
129 citations
129 citations