Individual single-wall carbon nanotubes as quantum wires

Tans, Sander J.; Devoret, Michel; Dai, Hongjie; Theß, Andreas; Smalley, R. E.; Geerligs, L.J.; Dekker, Cees

doi:10.1038/386474a0

Cited by 2,939 publications

(1,826 citation statements)

References 14 publications

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“…According to the above analysis, (6,5) tubes should grow five times faster than (9,1). Precise rate measurement is challenging because of the short growth duration and non-synchronized initiation of growth 36 .…”

Section: What Is the Mechanism Of The Vpe-based Swcnt Cloning?mentioning

confidence: 99%

“…S ingle-wall carbon nanotubes (SWCNTs) possess superior electrical and optical properties, and hold great promise for electronic and biomedical applications [1][2][3][4][5][6][7][8][9][10] . As the electronic property of an SWCNT strongly depends on its chirality, the lack of synthetic control in chirality has long been recognized as a fundamental impediment in the science and application of SWCNTs.…”

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confidence: 99%

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Chirality-controlled synthesis of single-wall carbon nanotubes using vapour-phase epitaxy

et al. 2012

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Chirality-controlled synthesis of single-wall carbon nanotubes with predefined chiralities has been an important but elusive goal for almost two decades. Here we demonstrate a general strategy for producing carbon nanotubes with predefined chiralities by using purified singlechirality nanotubes as seeds for subsequent metal catalyst free growth, resembling vapourphase epitaxy commonly used for semiconductor films. In particular, we have successfully synthesized (7, 6), (6, 5) and (7, 7) nanotubes, and used Raman spectroscopy to show unambiguously that the original chiralities of the nanotube seeds are preserved. Furthermore, we have performed electrical measurements on synthesized individual (7, 6) and (6, 5) nanotubes, confirming their semiconducting nature. The vapour-phase epitaxy approach is found to be highly robust and should enable a wide range of fundamental studies and technological developments.

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Section: What Is the Mechanism Of The Vpe-based Swcnt Cloning?mentioning

confidence: 99%

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confidence: 99%

Chirality-controlled synthesis of single-wall carbon nanotubes using vapour-phase epitaxy

et al. 2012

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“…13 In recent years, a number of experimental techniques have been developed to synthesize molecular junctions and measure their conductance. [14][15][16][17][18][19][20][21][22][23][24][25] These systems are often controlled by a gate potential designed to shift conductance peaks into the low-bias regime. 15,[26][27][28][29][30][31][32] The referred questions are of fundamental nature, leading to the understanding of current-voltage relations.…”

Section: Introductionmentioning

confidence: 99%

Magnetoresistance of Nanoscale Molecular Devices

2005

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Affecting the current through a molecular or nanoscale junction is usually done by a combination of bias and gate voltages. Magnetic fields are less studied because nanodevices can capture only low values of the magnetic flux. We review recent work done with the aim of finding the conditions for magnetic fields to significantly affect the conductance of such junctions. The basic idea is to create narrow tunneling resonances through a molecular ring-like structure that are highly sensitive to the magnetic field. We describe a computational method that allows us to examine atomistic models of such systems and discuss several specific examples of plausible systems, such as the quantum corral, carbon nanotubes, and polycyclic aromatic hydrocarbon molecules. A unique property of the magnetic field, namely, its ability to split degenerate levels on the ring, is shown to allow prototypes of interesting new nanoscale devices, such as the three-terminal parallel logic gate.

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“…In many experiments on quantum wires realized e.g. by single wall carbon nanotubes or semiconductor heterostructures, the temperature dependence of the linear conductance G was measured [3]. A typical experimental system in which the finite-length LL wire is coupled via tunnel barriers to two quasi two-dimensional, stripe-like (Fermi liquid) leads is sketched in figure 1.…”

Section: Introductionmentioning

confidence: 99%

Coupling-geometry-induced temperature scales in the conductance of Luttinger liquid wires

Wächter

Meden

Schönhammer

2009

J. Phys.: Condens. Matter

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Abstract. We study electronic transport through a one-dimensional, finite-length quantum wire of correlated electrons (Luttinger liquid) coupled at arbitrary position via tunnel barriers to two semi-infinite, one-dimensional as well as stripe-like (twodimensional) leads, thereby bringing theory closer towards systems resembling setups realized in experiments. In particular, we compute the temperature dependence of the linear conductance G of a system without bulk impurities. The appearance of new temperature scales introduced by the lengths of overhanging parts of the leads and the wire implies a G(T ) which is much more complex than the power-law behavior described so far for end-coupled wires. Depending on the precise setup the wide temperature regime of power-law scaling found in the end-coupled case is broken up in up to five fairly narrow regimes interrupted by extended crossover regions. Our results can be used to optimize the experimental setups designed for a verification of Luttinger liquid power-law scaling.

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Individual single-wall carbon nanotubes as quantum wires

Cited by 2,939 publications

References 14 publications

Chirality-controlled synthesis of single-wall carbon nanotubes using vapour-phase epitaxy

Chirality-controlled synthesis of single-wall carbon nanotubes using vapour-phase epitaxy

Magnetoresistance of Nanoscale Molecular Devices

Coupling-geometry-induced temperature scales in the conductance of Luttinger liquid wires

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