Adsorbate structure and vibrations on the Bi/Si(001)-(1 × 2) surface

P. F. Lyman; Y. Qian; T. L. Lee; M. J. Bedzyk

doi:10.1016/0921-4526(95)00962-0

Adsorbate structure and vibrations on the Bi/Si(001)-(1 × 2) surface

P. F. Lyman^*, Y. Qian, T. L. Lee, M. J. Bedzyk

^*Corresponding author for this work

Materials Science and Engineering

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

7 Scopus citations

Abstract

X-ray standing wave measurements were undertaken to determine the bonding position and vibrational amplitude (normal to the surface plane) of Bi ad-dimers on the Bi-saturated Si(001)-(1 × 2) surface. Using the (004) Bragg reflection, we find that the center of the Bi ad-dimers lies 1.72 Å above the bulk-like Si(004) surface atomic plane. Using the (008) Bragg reflection, we find that the room temperature root-mean-square vibrational amplitude of the Bi adatoms normal to the surface plane is 0.13 Å. This direct determination of the adsorbate vibrational dynamics verifies earlier assumptions regarding the magnitude of adsorbate surface vibrations on Si surfaces, and suggests that the vibrational amplitude of dimerized group V/Si(001)-(1 × 2) structures is independent of the mass of the adsorbate.

Original language	English (US)
Pages (from-to)	426-429
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	221
Issue number	1-4
DOIs	https://doi.org/10.1016/0921-4526(95)00962-0
State	Published - Apr 2 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Adsorbate structure and vibrations on the Bi/Si(001)-(1 × 2) surface",

abstract = "X-ray standing wave measurements were undertaken to determine the bonding position and vibrational amplitude (normal to the surface plane) of Bi ad-dimers on the Bi-saturated Si(001)-(1 × 2) surface. Using the (004) Bragg reflection, we find that the center of the Bi ad-dimers lies 1.72 {\AA} above the bulk-like Si(004) surface atomic plane. Using the (008) Bragg reflection, we find that the room temperature root-mean-square vibrational amplitude of the Bi adatoms normal to the surface plane is 0.13 {\AA}. This direct determination of the adsorbate vibrational dynamics verifies earlier assumptions regarding the magnitude of adsorbate surface vibrations on Si surfaces, and suggests that the vibrational amplitude of dimerized group V/Si(001)-(1 × 2) structures is independent of the mass of the adsorbate.",

author = "Lyman, {P. F.} and Y. Qian and Lee, {T. L.} and Bedzyk, {M. J.}",

note = "Funding Information: This work was supported by the US Department of Energy under contract No. W-31-109-ENG-38 to Argonne National Laboratory, contract No. DE-AC02-76CH00016 to National Synchrotron Light Source at Brookhaven National Laboratory, and by the National Science Foundation under contract No. DMR-9120521 to the MRC at Northwestern University. PFL is partially supported by National Institutes of Health under award No. IR01KD45295-01.",

year = "1996",

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doi = "10.1016/0921-4526(95)00962-0",

language = "English (US)",

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pages = "426--429",

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AU - Lyman, P. F.

AU - Qian, Y.

AU - Lee, T. L.

AU - Bedzyk, M. J.

N1 - Funding Information: This work was supported by the US Department of Energy under contract No. W-31-109-ENG-38 to Argonne National Laboratory, contract No. DE-AC02-76CH00016 to National Synchrotron Light Source at Brookhaven National Laboratory, and by the National Science Foundation under contract No. DMR-9120521 to the MRC at Northwestern University. PFL is partially supported by National Institutes of Health under award No. IR01KD45295-01.

PY - 1996/4/2

Y1 - 1996/4/2

N2 - X-ray standing wave measurements were undertaken to determine the bonding position and vibrational amplitude (normal to the surface plane) of Bi ad-dimers on the Bi-saturated Si(001)-(1 × 2) surface. Using the (004) Bragg reflection, we find that the center of the Bi ad-dimers lies 1.72 Å above the bulk-like Si(004) surface atomic plane. Using the (008) Bragg reflection, we find that the room temperature root-mean-square vibrational amplitude of the Bi adatoms normal to the surface plane is 0.13 Å. This direct determination of the adsorbate vibrational dynamics verifies earlier assumptions regarding the magnitude of adsorbate surface vibrations on Si surfaces, and suggests that the vibrational amplitude of dimerized group V/Si(001)-(1 × 2) structures is independent of the mass of the adsorbate.

AB - X-ray standing wave measurements were undertaken to determine the bonding position and vibrational amplitude (normal to the surface plane) of Bi ad-dimers on the Bi-saturated Si(001)-(1 × 2) surface. Using the (004) Bragg reflection, we find that the center of the Bi ad-dimers lies 1.72 Å above the bulk-like Si(004) surface atomic plane. Using the (008) Bragg reflection, we find that the room temperature root-mean-square vibrational amplitude of the Bi adatoms normal to the surface plane is 0.13 Å. This direct determination of the adsorbate vibrational dynamics verifies earlier assumptions regarding the magnitude of adsorbate surface vibrations on Si surfaces, and suggests that the vibrational amplitude of dimerized group V/Si(001)-(1 × 2) structures is independent of the mass of the adsorbate.

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ER -

Adsorbate structure and vibrations on the Bi/Si(001)-(1 × 2) surface

Abstract

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