Field emission properties of carbon nanowires from ab initio calculations

M  Bianchetti; P  Buonsante; F  Ginelli; A  Lorenzoni; H E  Roman; R A  Broglia

Field emission properties of carbon nanowires from ab initio calculations

M Bianchetti, P Buonsante, F Ginelli, A Lorenzoni, H E Roman, R A Broglia

Physics

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Abstract

The field emission (FE) characteristics of linear carbon chains, relevant for understanding FE properties of complex carbon-based nanostructures, are studied by means of self-consistent density functional calculations in the presence of a constant electric held, making use of pseudopotentials and the local density approximation (LDA). The transmission coefficient for electron tunneling through the LDA potential barrier to the vacuum is obtained within the WKB approximation. It is found that chain polarization has remarkable effects on the emission properties, yielding currents of the order of 1 mu A for a chain of 9 atoms under standard bias conditions. Such carbon chains may thus be seen as the atomic scale realization of metallic nanowires.

Original language	English
Title of host publication	ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES
Editors	H Kuzmany, J Fink, M Mehring, S Roth
Place of Publication	MELVILLE
Publisher	AMER INST PHYSICS
Pages	448-451
Number of pages	4
ISBN (Print)	1-56396-900-9
Publication status	Published - 1999
Event	13th International Winterschool on Electronic Properties of Novel Materials - KIRCHBERG Duration: 27 Feb 1999 → 6 Mar 1999

Conference

Conference	13th International Winterschool on Electronic Properties of Novel Materials
City	KIRCHBERG
Period	27/02/99 → 6/03/99

Keywords

ELECTRIC-FIELDS
NANOTUBES
CLUSTERS
CHAINS
WIRE

Cite this

Field emission properties of carbon nanowires from ab initio calculations. / Bianchetti, M ; Buonsante, P ; Ginelli, F et al.
ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES. ed. / H Kuzmany; J Fink; M Mehring; S Roth. MELVILLE: AMER INST PHYSICS, 1999. p. 448-451.

Research output: Chapter in Book/Report/Conference proceeding › Published conference contribution

Bianchetti, M, Buonsante, P, Ginelli, F, Lorenzoni, A, Roman, HE & Broglia, RA 1999, Field emission properties of carbon nanowires from ab initio calculations. in H Kuzmany, J Fink, M Mehring & S Roth (eds), ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES. AMER INST PHYSICS, MELVILLE, pp. 448-451, 13th International Winterschool on Electronic Properties of Novel Materials, KIRCHBERG, 27/02/99.

@inproceedings{07498d40999144a59c4a696120307fb1,

title = "Field emission properties of carbon nanowires from ab initio calculations",

abstract = "The field emission (FE) characteristics of linear carbon chains, relevant for understanding FE properties of complex carbon-based nanostructures, are studied by means of self-consistent density functional calculations in the presence of a constant electric held, making use of pseudopotentials and the local density approximation (LDA). The transmission coefficient for electron tunneling through the LDA potential barrier to the vacuum is obtained within the WKB approximation. It is found that chain polarization has remarkable effects on the emission properties, yielding currents of the order of 1 mu A for a chain of 9 atoms under standard bias conditions. Such carbon chains may thus be seen as the atomic scale realization of metallic nanowires.",

keywords = "ELECTRIC-FIELDS, NANOTUBES, CLUSTERS, CHAINS, WIRE",

author = "M Bianchetti and P Buonsante and F Ginelli and A Lorenzoni and Roman, {H E} and Broglia, {R A}",

year = "1999",

language = "English",

isbn = "1-56396-900-9",

pages = "448--451",

editor = "H Kuzmany and J Fink and M Mehring and S Roth",

booktitle = "ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES",

publisher = "AMER INST PHYSICS",

note = "13th International Winterschool on Electronic Properties of Novel Materials ; Conference date: 27-02-1999 Through 06-03-1999",

}

TY - GEN

T1 - Field emission properties of carbon nanowires from ab initio calculations

AU - Bianchetti, M

AU - Buonsante, P

AU - Ginelli, F

AU - Lorenzoni, A

AU - Roman, H E

AU - Broglia, R A

PY - 1999

Y1 - 1999

N2 - The field emission (FE) characteristics of linear carbon chains, relevant for understanding FE properties of complex carbon-based nanostructures, are studied by means of self-consistent density functional calculations in the presence of a constant electric held, making use of pseudopotentials and the local density approximation (LDA). The transmission coefficient for electron tunneling through the LDA potential barrier to the vacuum is obtained within the WKB approximation. It is found that chain polarization has remarkable effects on the emission properties, yielding currents of the order of 1 mu A for a chain of 9 atoms under standard bias conditions. Such carbon chains may thus be seen as the atomic scale realization of metallic nanowires.

AB - The field emission (FE) characteristics of linear carbon chains, relevant for understanding FE properties of complex carbon-based nanostructures, are studied by means of self-consistent density functional calculations in the presence of a constant electric held, making use of pseudopotentials and the local density approximation (LDA). The transmission coefficient for electron tunneling through the LDA potential barrier to the vacuum is obtained within the WKB approximation. It is found that chain polarization has remarkable effects on the emission properties, yielding currents of the order of 1 mu A for a chain of 9 atoms under standard bias conditions. Such carbon chains may thus be seen as the atomic scale realization of metallic nanowires.

KW - ELECTRIC-FIELDS

KW - NANOTUBES

KW - CLUSTERS

KW - CHAINS

KW - WIRE

M3 - Published conference contribution

SN - 1-56396-900-9

SP - 448

EP - 451

BT - ELECTRONIC PROPERTIES OF NOVEL MATERIALS - SCIENCE AND TECHNOLOGY OF MOLECULAR NANOSTRUCTURES

A2 - Kuzmany, H

A2 - Fink, J

A2 - Mehring, M

A2 - Roth, S

PB - AMER INST PHYSICS

CY - MELVILLE

T2 - 13th International Winterschool on Electronic Properties of Novel Materials

Y2 - 27 February 1999 through 6 March 1999

ER -

Field emission properties of carbon nanowires from ab initio calculations

Abstract

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Keywords

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