Probing Periodic Properties of "Artificial Elements" Assembled in a Quantum Wedge

Dong-Min Chen

Chinese Journal of Physics

43卷1S期（2005 / 02 / 01）

176 - 181

英文

As an extension to the notion of an artificial atom, artificial elements are appropriate descriptions of artificial atoms with incremental number of occupied quantum states, for a succession of which can exhibit periodic properties in resemblance to Mendeleev's Periodic Table of natural elements. As an example we show that an assembly of successive artificial elements can be realized through the fabrication of a quantum wedge. The energy level of the highest occupied quantum state in these elements display a two fold periodic shift which gives rise to a binary electron interference fringes, as imaged with a low temperature scanning tunneling microscope.