Comment on “New Model System for a One-Dimensional Electron Liquid: Self-OrganizedAtomic Gold Chains on Ge(001)”

Houselt, Arie van; Kockmann, D.; Mocking, Tijs F.; Poelsema, Bene; Zandvliet, Harold J. W.

doi:10.1103/physrevlett.103.209701

Cited by 21 publications

(24 citation statements)

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“…Fortunately, the heavy 5d-transition metals such as Pt and Au have a strong tendency to self-assemble into defect-free, straight, long and narrow nanowires on annealing, subsequent to deposition on semiconductor group IV (001) surfaces [16][17][18][19][20][21][22][23] . The Pt-and Au-induced nanowires, although different in nature, that is, in their structure [16][17][18][19][20][21][22] , share the property of being able to attain lengths of up to a few microns. Guided by the similarities in quantum transport between Ir on the one hand and Au and Pt on the other hand, we have investigated the self-organized growth of Ir on Ge(001) using scanning tunneling microscopy (STM) and spectroscopy in an attempt to expand the playground for 1D physics.…”

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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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“…28,29,97,[166][167][168][169] To resolve this point, a series of ARPES experiments have been published since 2009, which show the nature of this band to be a complicated issue, in which experimental limitations often preclude a definite and final answer. 100,104,170,171 The experiments show that there exists a highly anisotropic electronic band near the Fermilevel, which may well be 1D.…”

Section: Experimental Controversiesmentioning

confidence: 99%

Modeling 1D structures on semiconductor surfaces: synergy of theory and experiment

Vanpoucke

2014

J. Phys.: Condens. Matter

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Atomic scale nanowires attract enormous interest in a wide range of fields. On the one hand, due to their quasi-one-dimensional nature, they can act as a experimental testbed for exotic physics: Peierls instability, charge density waves, and Luttinger liquid behavior. On the other hand, due to their small size, they are of interest for future device applications in the micro-electronics industry, but also for applications regarding molecular electronics. This versatile nature makes them interesting systems to produce and study, but their size and growth conditions push both experimental production and theoretical modeling to their limits. In this review, modeling of atomic scale nanowires on semiconductor surfaces is discussed focusing on the interplay between theory and experiment. The current state of modeling efforts on Pt-and Au-induced nanowires on Ge (001) is presented, indicating their similarities and differences. Recently discovered nanowire systems (Ir, Co, Sr) on the Ge(001) surface are also touched upon. The importance of scanning tunneling microscopy as a tool for direct comparison of theoretical and experimental data is shown, as is the power of density functional theory as an atomistic simulation approach. It becomes clear that complementary strengths of theoretical and experimental investigations are required for successful modeling of the atomistic nanowires, due to their complexity.

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“…The ridges of the nanowires show a zig-zag structure indicating that they consist of buckled Ge-Ge or Au-Ge dimer rows (59,64). Scanning tunneling microscopy (STM) and spectroscopy (STS) studies on Au/Ge(001) surface show that both the nanowires and the troughs are metallic in nature (63,65,66,74) and their differential conductivities are comparable (63,66) at the Fermi energy. Blumenstein et al (71) reported that the density of states of these nanowires show universal scaling of energy and temperature which is a characteristic one dimensional Tomonaga Lutting Liquid.…”

Section: Au Modified Ge(001) Surfacementioning

confidence: 98%

“…Shortly after the discovery of Pt nanowires on Ge(001), Au induced Ge(001) were reported by Wang et al (64) which was followed by an extensive investigation regarding its structural and electronic properties in the recent years (59,63,(65)(66)(67)(68)(69)(70)(71)(72)(73). Au/Ge(001) surface is prepared by depositing a fraction of a monolayer of Au on a clean Ge(001) substrate followed by annealing at 650 ±25 K. Very similar to the Pt/Ge(001) nanowires, Au/Ge(001) surface 3.1 Nanotemplates for Molecular Electronics consist of a regular arrays of straight, parallel, and kink free nanowires as shown in Fig.…”

Section: Au Modified Ge(001) Surfacementioning

confidence: 99%

“…The structural and electronic properties of the Au/Ge(001) system and dI dV 5.3 Results and Discussion spectra of the nanowires and the troughs are already published and discussed in detail in Refs. (59,(63)(64)(65)(66)(67)(68)(69)(70)(71)(72)(73)114). A brief description of Au induced nanowires has been presented in chapter 3.…”

Section: Structural and Electronic Propertiesmentioning

confidence: 99%

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Comment on “New Model System for a One-Dimensional Electron Liquid: Self-OrganizedAtomic Gold Chains on Ge(001)”

Cited by 21 publications

References 3 publications

Electronically stabilized nanowire growth

Electronically stabilized nanowire growth

Modeling 1D structures on semiconductor surfaces: synergy of theory and experiment

The Art of Catching and Probing Single Molecules

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