Quantum coherence and lifetimes of surface-state electrons
Graph Chatbot
Chat with Graph Search
Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.
DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.
Pseudopotential calculations within density-functional theory for a few selected solids (Si, GaAs, and Al) are used to assess the validity of two generalized-gradient approximations (GGA's), the one proposed by Becke and Perdew (BP) and the more recent one ...
We investigate the role of Coulomb correlation in an electron-hole gas that is strongly driven by an optical pump. Coulomb scattering is treated including Born diagrams and the light-dressing of the carriers is consistently included. When the pump is spect ...
The interacting electron-hole system is investigated in the framework of non-equilibrium Green's functions. Using the Bethe-Salpeter equation in the ladder approximation we derive a set of equations for the polarization of the interacting electron and hole ...
We have developed an ultra-stable low temperature scanning tunneling microscope (LTSTM) for application in atomic scale spectroscopy and atom manipulation experiments. The design is based on the Besocke type microscope allowing the installation of the LTST ...
Ag(111) surface state electrons have been confined in symmetric and asymmetric Fabry-Perot resonators formed by two atomically parallel step edges. The local density of states in the resonators has been measured by means of low-temperature scanning tunneli ...
A no. of model substrates, e.g., I (X = Br, iodo) (anti/cis), were submitted to Zn-promoted fragmentation and the compn. of the resulting mixt. of isomeric fluorodienes was detd. The exocyclic reaction center, bearing the electrofugal leaving group, underg ...
RCH:CHCl (R = Ph, o-, m-, and p-MeC6H4, 2,4,6-Me3C6H2, PhCH2, PhCH:CH, PhC.tplbond.C, a-furyl, etc.) reacted with PhLi to give RC.tplbond.CLi with the intermediate formation of RCH:CLiCl. cis- RCH:CHCl was less reactive than trans-RCH:CHCl due to steric ef ...
The low-temperature direct and indirect optical transitions in double-barrier Al0.3Ga0.7As/AlAs/GaAs single quantum wells, with AlAs widths of 0, 1, and 2 monolayers, have been studied as a function of pressure. It is shown that intense type-II recombinati ...
In the frame of the RD26 collaboration at CERN we have built and tested several prototypes of fast-RICH detectors suitable for the construction of large systems. The detectors used a solid photocathode consisting of a 500 nm CsI layer evaporated on a conve ...
