Results 251 to 260 of about 14,554 (282)

Analysis of InAs(001) surfaces by reflectance anisotropy spectroscopy

Physical Review B, 2001
Reflectance anisotropy spectroscopy (RAS) was applied to study the reconstructed surfaces of InAs(001) at room temperature. Arsenic-capped InAs samples, grown by molecular beam epitaxy, were annealed in ultrahigh vacuum. Low energy electron diffraction shows that, following As decapping, a $2\ifmmode\times\else\texttimes\fi{}4$ phase (As-rich) is ...
GOLETTI, CLAUDIO, ARCIPRETE, FABRIZIO, Almaviva, S., CHIARADIA, PIETRO, Esser, N., RICHTER, WOLFGANG   +5 more
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Reflection anisotropy spectroscopy: a new probe of metal surfaces

Surface and Interface Analysis, 2001
Abstract Reflection anisotropy spectroscopy (RAS) is a non‐destructive optical probe of surfaces capable of operation within a wide range of environments. The RAS technique was developed to study semiconductor growth and more recently has been used to probe the optical properties of metal surfaces.
D. S. Martin, P. Weightman
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Reflectance anisotropy spectroscopy of oriented films of semiconducting polymers

The Journal of Chemical Physics, 2000
We present reflectance anisotropy spectroscopy (RAS) data for aligned films of luminescent conjugated polymers. Ultrathin films (5–10 nm) spin-cast onto friction-deposited poly-tetrafluoroethylene (PTFE) show birefringence and dichroism indicating alignment of the polymer chains with the PTFE axis.
E. K. Miller, K. Hingerl, C. J. Brabec, A. J. Heeger, N. S. Sariciftci   +4 more
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Liquid crystal alignment layers studied by reflection anisotropy spectroscopy

Surface Science, 2003
Reflection anisotropy spectroscopy (RAS) achieves surface specificity by sensing optical anisotropy. While surface specificity is prized, it is often rather difficult to relate optical anisotropy to properties of more direct interest. This fact, together with its inability to study isotropic surfaces, can be considered weaknesses of RAS.
B.F. Macdonald, R.J. Cole
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Reflection Anisotropy Spectroscopy: A New Probe for the Solid-Liquid Interface

Physical Review Letters, 2000
Introducing reflection anisotropy spectroscopy (RAS) as a new probe for solid-liquid interfaces, we present results for the Au(110)/electrolyte interface which serves as a model system. We demonstrate that RAS is sensitive to surface phase transitions, step morphology, and electronic surface states.
, Sheridan, , Martin, , Power, , Barrett, , Smith, , Lucas, , Nichols, , Weightman   +7 more
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Ge/GaAs(001) interface formation investigated by reflectance anisotropy spectroscopy

Physical Review B, 1999
The formation of the Ge/GaAs(001) interface has been investigated following the transformation of an As-dimer terminated GaAs(001)(2 X 4) surface into a Ge-Ga-dimer terminated (1 X 2) reconstruction and the subsequent deposition up to 10 ML of Ge. The modification of the surface atomic geometry and the related electronic structure has been monitored by
Emiliani, V., Shkrebtii, AI, GOLETTI, CLAUDIO, Frisch, AM, Fimland, BO, Esser, N., RICHTER, WOLFGANG   +6 more
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Substrate dependence of adlayer optical response in reflectance anisotropy spectroscopy

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1998
Reflectance anisotropy spectroscopy (RAS) offers extreme surface sensitivity and can be used to study gas-solid and solid-liquid interfaces. Although the technique has already made a considerable contribution to in situ monitoring of the epitaxial growth of semiconductors, its impact has thus far been limited by difficulties in interpreting ...
R. J. Cole, B. G. Frederick, P. Weightman   +2 more
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Optical spectroscopy of semiconductor surfaces: From differential reflectivity to reflection anisotropy spectroscopy (personal and subjective notes)

Il Nuovo Cimento D, 1998
An historical review of the development of optical spectroscopy of surface states in semiconductors is presented. The importance of symmetry considerations and of polarization properties is emphasized.
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Spin-orbit effects on reflectance anisotropy spectroscopy

Physical Review B, 2004
R. A. Vázquez-Nava, Bernardo S. Mendoza, C. Castillo   +2 more
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Adsorbate Azimuthal Orientation from Reflectance Anisotropy Spectroscopy

Physical Review Letters, 1998
B. G. Frederick, J. R. Power, R. J. Cole, C. C. Perry, Q. Chen, S. Haq, Th. Bertrams, N. V. Richardson, P. Weightman   +8 more
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