Abstract
We have obtained the first energy-resolved real-space images of the filled and empty surface states of the Si(111)-(7\ifmmode\times\else\texttimes\fi{}7) surface, with 3-\ensuremath{'}A lateral resolution. This ability to resolve spatially these surface states with a scanning tunneling microscope depends upon a new method to acquire and separate geometric and electronic information. Our results not only are in good agreement with previous spectroscopic studies but also directly reveal the atomic location and geometric origin of the Si(111)-(7\ifmmode\times\else\texttimes\fi{}7) surface states.
Keywords
Scanning tunneling microscopeSurface (topology)Space (punctuation)PhysicsEnergy (signal processing)Surface statesElectronic structureAtomic physicsMaterials scienceCondensed matter physicsGeometryQuantum mechanicsComputer scienceMathematics
Affiliated Institutions
Related Publications
<i>Ab initio</i>theory of the Si(111)-(7×7) surface reconstruction: A challenge for massively parallel computation
An ab initio investigation of the Si(111)-(7\ifmmode\times\else\texttimes\fi{}7) surface reconstruction is undertaken using the state of the art in massively parallel computatio...
Real-Time Observation of the Dynamics of Single Pb Atoms on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi><mml:mo>(</mml:mo><mml:mn>111</mml:mn><mml:mo>)</mml:mo><mml:mo>−</mml:mo><mml:mo>(</mml:mo><mml:mn>7</mml:mn><mml:mo>×</mml:mo><mml:mn>7</mml:mn><mml:mo>)</mml:mo></mml:math>by Scanning Tunneling Microscopy
The very early stages of Pb deposition on $\mathrm{Si}(111)\ensuremath{-}(7\ifmmode\times\else\texttimes\fi{}7)$ surfaces have been investigated in real time by scanning tunneli...
7 × 7 Reconstruction on Si(111) Resolved in Real Space
The 7 \ifmmode\times\else\texttimes\fi{} 7 reconstruction on Si(111) was observed in real space by scanning tunneling microscopy. The experiment strongly favors a modified adato...
Direct measurement of diffusion by hot tunneling microscopy: Activation energy, anisotropy, and long jumps
We measure the activation energy for surface diffusion of isolated Pb adatoms on Ge(111) by observing individual atomic interchanges using a scanning tunneling microscope. The d...
Adsorbate-substrate and adsorbate-adsorbate interactions of Na and K adlayers on Al(111)
We present total-energy, force, and electronic-structure calculations for Na and K adsorbed in various geometries on an Al(111) surface. The calculations apply density-functiona...
Publication Info
- Year
- 1986
- Type
- article
- Volume
- 56
- Issue
- 18
- Pages
- 1972-1975
- Citations
- 1114
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
1114
OpenAlex
Cite This
Robert J. Hamers,
R. M. Tromp,
J. E. Demuth
(1986).
Surface Electronic Structure of Si (111)-(7×7) Resolved in Real Space.
Physical Review Letters
, 56
(18)
, 1972-1975.
https://doi.org/10.1103/physrevlett.56.1972
Identifiers
- DOI
- 10.1103/physrevlett.56.1972