Tin-stabilized (1 x 2) and (1 x 4) reconstructions on GaAs(100) and InAs(100) studied by scanning tunneling microscopy, photoelectron spectroscopy, and ab initio calculations

• Tin (Sn) induced (1 x 2) reconstructions on GaAs(100) and InAs(100) substrates have been studied by low energy electron diffraction (LEED), photoelectron spectroscopy, scanning tunneling microscopy/spectroscopy (STM/STS) and ab initio calculations. The comparison of measured and calculated STM images and surface core-level shifts shows that these surfaces can be well described with the energetically stable building blocks that consist of Sn-III dimers. Furthermore, a new Sn-induced (1 x 4) reconstruction was found. In this reconstruction the occupied dangling bonds are closer to each other than in the more symmetric (1 x 2) reconstruction, and it is shown that the (1 x 4) reconstruction is stabilized as the adatom size increases.

Subject headings

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Annan teknik -- Övrig annan teknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)

Keyword

Indium-arsenide (InAs)

surface

Surface reconstruction

radiation photoelectron spectroscopy

state

basis-set

method

Single crystal surfaces

total-energy calculations

molecular-beam epitaxy

Gallium-arsenide (GaAs)

Scanning-tunneling microscopy

augmented-wave

growth

metals

sn-doped gaas

Synchrotron

dynamics

Ab initio calculations

Ab initio calculations

Scanning-tunneling microscopy

Synchrotron

radiation photoelectron spectroscopy

Surface reconstruction

Gallium-arsenide (GaAs)

Indium-arsenide (InAs)

Single crystal surfaces

Physics

Material physics with surface physics

Publication and Content Type

art (subject category)

ref (subject category)