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Title: Improved study of electric dipoles on the Si(100)-2 × 1 surface by non-contact scanning nonlinear dielectric microscopy

We studied a Si(100)-2 × 1 surface by non-contact scanning nonlinear dielectric microscopy (NC-SNDM). Simultaneously taken images of the topography and electric dipole moment distribution show that negative electric dipole moments are locally formed on individual dimers on the surface. In addition, we obtained the dc bias voltage dependence of the ε{sub local}(3) signal on a specific dimer by using an atom-tracking technique with NC-SNDM. We observed that the electric dipole induced a surface potential of around −250 mV on the dimer.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577 (Japan)
  2. Graduate School of Engineering Science, Osaka University, Toyonaka 560-8531 (Japan)
  3. Graduate School of Engineering, Osaka University, Suita 565-0871 (Japan)
Publication Date:
OSTI Identifier:
22310821
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; DIELECTRIC MATERIALS; DIMERS; DISTRIBUTION; ELECTRIC DIPOLE MOMENTS; ELECTRIC DIPOLES; MICROSCOPY; NONLINEAR PROBLEMS; SILICON; SURFACE POTENTIAL; SURFACES