Structure determination of ordered 1/3-monolayer Pb on Ge(111) by photoelectron holography

J. M. Roesler; T. Miller; T. C. Chiang

doi:10.1016/0039-6028(95)01012-2

Structure determination of ordered 1/3-monolayer Pb on Ge(111) by photoelectron holography

J. M. Roesler, T. Miller, T. C. Chiang

STS Project Technical Systems

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The technique of photoelectron holography has been applied to the (√3 x √3)R30° phase of 1/3-monolayer Pb on Ge(111) for a determination of the local bonding structure of the Pb adatom. Angle-resolved photoemission from the Pb 5d core level shows intensity oscillations as a function of photon energy due to diffraction effects. These oscillations were measured at various emission angles and Fourier inverted to yield three-dimensional real-space images of the nearest neighbours to the Pb emitter atom, which is bonded at the T₄ site. The use of the small-cone technique to eliminate artifacts is discussed.

Original language	English
Pages (from-to)	161-167
Number of pages	7
Journal	Surface Science
Volume	348
Issue number	1-2
DOIs	https://doi.org/10.1016/0039-6028(95)01012-2
State	Published - Mar 1 1996

Funding

This work was supported by the US Department of Energy (Division of Materials Sciences, Office of Basic Energy Sciences) under Grant No. DEFG02-91 ER45439. Acknowledgement is also made to the Donors of the Petroleum Research Fund, administered by the American Chemical Society, and to the US Xaticnal Science Foundation Grant No. DMR-92-23546 for partial personnel and equipment support in connection with the synchrotron beam line operation. We acknowledge the use of central facilities of the Frederick Seitz Materials Research Laboratory of the University of Illinois at Urbana-Champaign. The Synchrotron Radiation Center of the University of Wisconsin-Madison is supported by the US National Science Foundation Grant No. DMR-92-12658.

Keywords

Electron-solid interactions, scattering, diffraction
Germanium
Lead
Metal-semiconductor interfaces
Photoelectron holography
Single crystal surfaces
Soft X-ray photoelectron spectroscopy
Surface structure

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10.1016/0039-6028(95)01012-2

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abstract = "The technique of photoelectron holography has been applied to the (√3 x √3)R30° phase of 1/3-monolayer Pb on Ge(111) for a determination of the local bonding structure of the Pb adatom. Angle-resolved photoemission from the Pb 5d core level shows intensity oscillations as a function of photon energy due to diffraction effects. These oscillations were measured at various emission angles and Fourier inverted to yield three-dimensional real-space images of the nearest neighbours to the Pb emitter atom, which is bonded at the T4 site. The use of the small-cone technique to eliminate artifacts is discussed.",

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AU - Miller, T.

AU - Chiang, T. C.

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AB - The technique of photoelectron holography has been applied to the (√3 x √3)R30° phase of 1/3-monolayer Pb on Ge(111) for a determination of the local bonding structure of the Pb adatom. Angle-resolved photoemission from the Pb 5d core level shows intensity oscillations as a function of photon energy due to diffraction effects. These oscillations were measured at various emission angles and Fourier inverted to yield three-dimensional real-space images of the nearest neighbours to the Pb emitter atom, which is bonded at the T4 site. The use of the small-cone technique to eliminate artifacts is discussed.

KW - Electron-solid interactions, scattering, diffraction

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KW - Lead

KW - Metal-semiconductor interfaces

KW - Photoelectron holography

KW - Single crystal surfaces

KW - Soft X-ray photoelectron spectroscopy

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Structure determination of ordered 1/3-monolayer Pb on Ge(111) by photoelectron holography

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