Adsorption and manipulation of endohedral and higher fullerenes on Si(100)-2×1

M. J. Butcher; J. W. Nolan; M. R.C. Hunt; P. H. Beton; L. Dunsch; P. Kuran; P. Georgi; T. J.S. Dennis

Adsorption and manipulation of endohedral and higher fullerenes on Si(100)-2×1

M. J. Butcher^*, J. W. Nolan, M. R.C. Hunt, P. H. Beton, L. Dunsch, P. Kuran, P. Georgi, T. J.S. Dennis

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

The adsorption of the endohedral fullerene, La@C₈₂, and the higher fullerene, C₈₄, on Si(100)-2×1 is investigated using a scanning tunneling microscope (STM) operating in ultrahigh vacuum. Both molecules are found to adsorb directly above the dimer rows that are formed on the Si(100)-2×1 surface, as well as in trough sites midway between dimer rows. Adsorption above dimer rows, not observed for C₆₀, is attributed to the larger radius of curvature of these fullerene cages. The response of La@C₈₂ to manipulation by the tip of the STM is also investigated. Molecules in either adsorption site may be manipulated with a threshold gap impedance ∼1.0 GΩ. Owing to a near-commensurability between the molecular diameter of La@C₈₂ and the lattice constant of the Si(100) surface, close-packed arrangements of molecules may be formed.

Original language	English
Article number	125413
Pages (from-to)	1254131-1254135
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	12
Publication status	Published - Mar 2003
Externally published	Yes

Cite this

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title = "Adsorption and manipulation of endohedral and higher fullerenes on Si(100)-2×1",

abstract = "The adsorption of the endohedral fullerene, La@C82, and the higher fullerene, C84, on Si(100)-2×1 is investigated using a scanning tunneling microscope (STM) operating in ultrahigh vacuum. Both molecules are found to adsorb directly above the dimer rows that are formed on the Si(100)-2×1 surface, as well as in trough sites midway between dimer rows. Adsorption above dimer rows, not observed for C60, is attributed to the larger radius of curvature of these fullerene cages. The response of La@C82 to manipulation by the tip of the STM is also investigated. Molecules in either adsorption site may be manipulated with a threshold gap impedance ∼1.0 GΩ. Owing to a near-commensurability between the molecular diameter of La@C82 and the lattice constant of the Si(100) surface, close-packed arrangements of molecules may be formed.",

author = "Butcher, {M. J.} and Nolan, {J. W.} and Hunt, {M. R.C.} and Beton, {P. H.} and L. Dunsch and P. Kuran and P. Georgi and Dennis, {T. J.S.}",

year = "2003",

month = mar,

language = "English",

volume = "67",

pages = "1254131--1254135",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

number = "12",

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TY - JOUR

T1 - Adsorption and manipulation of endohedral and higher fullerenes on Si(100)-2×1

AU - Butcher, M. J.

AU - Nolan, J. W.

AU - Hunt, M. R.C.

AU - Beton, P. H.

AU - Dunsch, L.

AU - Kuran, P.

AU - Georgi, P.

AU - Dennis, T. J.S.

PY - 2003/3

Y1 - 2003/3

N2 - The adsorption of the endohedral fullerene, La@C82, and the higher fullerene, C84, on Si(100)-2×1 is investigated using a scanning tunneling microscope (STM) operating in ultrahigh vacuum. Both molecules are found to adsorb directly above the dimer rows that are formed on the Si(100)-2×1 surface, as well as in trough sites midway between dimer rows. Adsorption above dimer rows, not observed for C60, is attributed to the larger radius of curvature of these fullerene cages. The response of La@C82 to manipulation by the tip of the STM is also investigated. Molecules in either adsorption site may be manipulated with a threshold gap impedance ∼1.0 GΩ. Owing to a near-commensurability between the molecular diameter of La@C82 and the lattice constant of the Si(100) surface, close-packed arrangements of molecules may be formed.

AB - The adsorption of the endohedral fullerene, La@C82, and the higher fullerene, C84, on Si(100)-2×1 is investigated using a scanning tunneling microscope (STM) operating in ultrahigh vacuum. Both molecules are found to adsorb directly above the dimer rows that are formed on the Si(100)-2×1 surface, as well as in trough sites midway between dimer rows. Adsorption above dimer rows, not observed for C60, is attributed to the larger radius of curvature of these fullerene cages. The response of La@C82 to manipulation by the tip of the STM is also investigated. Molecules in either adsorption site may be manipulated with a threshold gap impedance ∼1.0 GΩ. Owing to a near-commensurability between the molecular diameter of La@C82 and the lattice constant of the Si(100) surface, close-packed arrangements of molecules may be formed.

UR - http://www.scopus.com/inward/record.url?scp=0038219562&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0038219562

SN - 1098-0121

VL - 67

SP - 1254131

EP - 1254135

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 12

M1 - 125413

ER -

Adsorption and manipulation of endohedral and higher fullerenes on Si(100)-2×1

Abstract

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