Controlled electron doping into metallic atomic wires: Si(111)4x1-In
SCIE
SCOPUS
- Title
- Controlled electron doping into metallic atomic wires: Si(111)4x1-In
- Authors
- Morikawa, H; Hwang, CC; Yeom, HW
- Date Issued
- 2010-02
- Publisher
- AMER PHYSICAL SOC
- Abstract
- We demonstrate the controllable electron doping into metallic atomic wires, indium wires self-assembled on the Si(111) surface, which feature one-dimensional (1D) band structure and temperature-driven metal-insulator transition. The electron filling of 1D metallic bands is systematically increased by alkali-metal adsorption, which, in turn, tunes the macroscopic property, that is, suppresses the metal-insulator transition. On the other hand, the dopant atoms induce a local lattice distortion without a band-gap opening, leading to a microscopic phase separation on the surface. The distinct bifunctional, electronic and structural, roles of dopants in different length scales are thus disclosed.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12230
- DOI
- 10.1103/PHYSREVB.81.075401
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 81, no. 7, 2010-02
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