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First Evidence of a Single‐Ion Electron Trap at the Surface of an Ionic Oxide
Author(s) -
Chiesa Mario,
Paganini Maria Cristina,
Giamello Elio,
Di Valentin Cristiana,
Pacchioni Gianfranco
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200250811
Subject(s) - ionic bonding , oxide , ion , electron , trapping , surface (topology) , chemistry , penning trap , chemical physics , materials science , inorganic chemistry , atomic physics , physics , organic chemistry , ecology , quantum mechanics , biology , geometry , mathematics
A single electron can be trapped by a triply coordinated single cation at a magnesium oxide surface (see picture). The resulting center, denoted MgO corner (H + /e − ), is a member of a new family of surface color centers and represents a significant advance for the concept of electron‐trapping sites in solids.