| Chains of gold atoms with tailored electronic states (2004) | |||||||||||
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| PHYSICAL REVIEW Chains gold atoms with tailored electronic states Crain McChesney Fan Zheng Gallagher Snijders Bissen Gundelach Erwin and Himpsel Department Physics University Wisconsin Madison University Avenue Madison Wisconsin USA Department Physics Lakehead University Thunder Bay Ontario Canada Department NanoScience Delft University Technology Lorentzweg Delft The Netherlands Synchrotron Radiation Center University Wisconsin Madison Schneider Drive Stoughton Wisconsin USA Center for Computational Materials Science Naval Research Laboratory Washington USA Received August published March combination angle resolved photoemission and scanning tunneling microscopy used explore the possibilities for tailoring the electronic structure gold atom chains silicon surfaces shown that the interchain coupling and the band filling can adjusted systematically varying the step spacing via the tilt angle from Planes with odd Miller indices are stabilized chains gold atoms Metallic bands and Fermi surfaces are observed These findings suggest that atomic chains stepped semiconductor substrates make highly flexible class solids approaching the one dimensional limit DOI PhysRevB PACS number MOTIVATION has been predicted for some time that electrons exhibit fundamentally different properties when confined move along single dimension Single particle excitations are replaced collective excitations since the wave functions overlap strongly and become highly correlated This collectivization has st | |||||||||||
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