Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2010-03-24
Physical Review Letters, 104, 247403 (2010)
Physics
Condensed Matter
Other Condensed Matter
4 pages, 4 figures
Scientific paper
10.1103/PhysRevLett.104.247403
We present the observation of an efficient mechanism for positron sticking to surfaces termed here Auger mediated quantum sticking. In this process the energy associated with the positrons transition from an unbound scattering state to a bound image potential state is coupled to a valence electron which can then have sufficient energy to leave the surface. Compelling evidence for this mechanism is found in a narrow secondary electron peak observed at incident positron kinetic energies well below the electron work function.
Barbiellini Bernardo
Fazleev N. G.
Guagliardo P.
Mukherjee Soma
Nadesalingam M. P.
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