Observation of spin and charge collective modes in one-dimensional metallic chains

Segovia, P.; Purdie, D.; Hengsberger, Matthias; Baer, Y.

doi:10.1038/990052

Cited by 380 publications

(389 citation statements)

References 21 publications

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“…O ne-dimensional (1D) electron systems have recently received much attention [1][2][3][4][5][6][7][8][9] . This interest is driven by the fact that these systems display a myriad of exciting physical phenomena, such as the quantization of conductance and spin and charge density waves [10][11][12][13] .…”

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confidence: 99%

Electronically stabilized nanowire growth

et al. 2013

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Metallic nanowires show unique physical properties owing to their one-dimensional nature. Many of these unique properties are intimately related to electron-electron interactions, which have a much more prominent role in one dimension than in two or three dimensions. Here we report the direct visualization of quantum size effects responsible for preferred lengths of self-assembled metallic iridium nanowires grown on a germanium (001) surface. The nanowire length distribution shows a strong preference for nanowire lengths that are an integer multiple of 4.8 nm. Spatially resolved scanning tunneling spectroscopic measurements reveal the presence of electron standing waves patterns in the nanowires. These standing waves are caused by conduction electrons, that is the electrons near the Fermi level, which are scattered at the ends of the nanowire.

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confidence: 99%

Electronically stabilized nanowire growth

et al. 2013

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“…1 While most of the previous studies on 1D systems have been performed on limited types of anisotropic bulk materials, 1 very recently unique surface 1D metallic systems were identified on the flat and vicinal Si͑111͒ surfaces with atomic-scale chain structures induced by In or Au adsorption. [2][3][4] These systems featuring nearly half-filled 1D electron bands bring about the possibility of detailed investigation of 1D physical properties in nanoscale and of atomic-scale fabrication of tailored 1D materials systems.…”

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confidence: 99%

Nature of the broken-symmetry phase of the one-dimensional metallic In/Si(111) surface

et al. 2002

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The phase transition of a metallic In chain structure on Si(111) was investigated by high-resolution photoemission. Core-level spectra clearly elucidate that the symmetry breaking at low temperature occurs only within the inner parts of the In chains. In the valence bands, the transition is accompanied by the formation of pseudogaps of 80–150 meV and the band backfolding with only marginal changes of the band dispersion. No sign of Luttinger liquid behavior is observed in the spectral function near the Fermi level. This result is generally consistent with the idea of a fluctuating one-dimensional charge-density wave state but conflicting with the present structure model for the low-temperature phase

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“…[1][2][3][4] The one-dimensional (1D) nature of these structures is the origin of a number of distinctive behaviors that are absent in their two-dimensional (2D, i.e. monoor multi-layered) and bulk counterparts.…”

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confidence: 99%

Mechanotunable monatomic metal structures at graphene edges

Wei¹,

Chang²,

Zhu³

et al. 2014

Phys. Chem. Chem. Phys.

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Monatomic metal (e.g. silver) structures could form preferably at graphene edges. We explore their structural and electronic properties by performing density functional theory based first-principles calculations. The results show that cohesion between metal atoms, as well as electronic coupling between metal atoms and graphene edges offer remarkable structural stability of the hybrid. We find that the outstanding mechanical properties of graphene allow tunable properties of the metal monatomic structures by straining the structure. The concept is extended to metal rings and helices that form at open ends of carbon nanotubes and edges of twisted graphene ribbons. These findings demostrate the role of graphene edges as an efficient one-dimensional template for low-dimensional metal structures that are mechanotunable.

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Observation of spin and charge collective modes in one-dimensional metallic chains

Cited by 380 publications

References 21 publications

Electronically stabilized nanowire growth

Electronically stabilized nanowire growth

Nature of the broken-symmetry phase of the one-dimensional metallic In/Si(111) surface

Mechanotunable monatomic metal structures at graphene edges

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