On the structural and electronic properties of Ir-silicide nanowires on Si(001) surface

Journal Article · Wed Sep 07 00:00:00 EDT 2016 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4961550· OSTI ID:22598815

Fatima,; Hossain, Sehtab; Mohottige, Rasika; Oncel, Nuri ^[1]; Can Oguz, Ismail; Gulseren, Oguz ^[2]; Çakır, Deniz ^[3]

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1. Department of Physics and Astrophysics, University of North Dakota, Grand Forks, North Dakota 58202 (United States)
2. Department of Physics, Bilkent University, Ankara (Turkey)
3. Department of Physics, University of Antwerp, Antwerp 2610 (Belgium)

Iridium (Ir) modified Silicon (Si) (001) surface is studied with Scanning Tunneling Microscopy/Spectroscopy (STM/STS) and Density Functional Theory (DFT). A model for Ir-silicide nanowires based on STM images and ab-initio calculations is proposed. According to our model, the Ir adatom is on the top of the substrate dimer row and directly binds to the dimer atoms. I-V curves measured at 77 K shows that the nanowires are metallic. DFT calculations confirm strong metallic nature of the nanowires.

• OSTI ID: 22598815
• Journal Information: Journal of Applied Physics, Vol. 120, Issue 9; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
DENSITY FUNCTIONAL METHOD
DIAGRAMS
DIMERS
IMAGES
IRIDIUM
NANOWIRES
SCANNING TUNNELING MICROSCOPY
SILICIDES
SILICON
SPECTROSCOPY
SUBSTRATES
SURFACES
TUNNEL EFFECT