Control of phase transition in quasi-one-dimensional atomic wires by electron doping

Title
Control of phase transition in quasi-one-dimensional atomic wires by electron doping
Authors
Shim, Hyungjoon
Keywords
quasi-one-dimensional, atomic wires
Issue Date
2009-06
Publisher
American Institute of Physics
Abstract
We report on the controlled change in the phase transition in In atomic chains on a Si(111) surface by introducing Na as impurity atoms. The Na-induced changes in the transition temperature (Tc) from a metallic room-temperature 4X1 structure into an insulating low-temperature 8X2 structure were determined by using low-energy electron diffraction. The Tc decreased almost linearly when the amount of deposited Na atoms was increased. The decrease in Tc with the increase in the amount of adsorbed Na atoms is suggested to be due to the doping of electrons from adsorbate to the substrate.
URI
http://dspace.inha.ac.kr/handle/10505/1512
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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