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Scanning tunneling spectroscopy

About: Scanning tunneling spectroscopy is a research topic. Over the lifetime, 7886 publications have been published within this topic receiving 213828 citations.


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TL;DR: In this paper, tunneling microscopy images were used to characterize the structure and electronic properties of molybdenum selenide (mS6) molecular wires, and the implications of these results to metal-insulator transitions in 1D systems are discussed.
Abstract: Scanning tunneling microscopy (STM) has been used to characterize the structure and electronic properties of molybdenum selenide $({\mathrm{Mo}}_{6}{\mathrm{Se}}_{6})$ molecular wires. STM images resolve the 0.45 nm unit cell repeat in isolated molecular wires and bundles of wires. Tunneling spectroscopy measurements exhibit sharp peaks in the local density of states that are consistent with the Van Hove singularities expected for a one-dimensional (1D) system. These data have been compared with previous band structure calculations. Preliminary measurements at 5 K show no evidence of a gap opening at low temperatures. The implications of these results to metal-insulator transitions in 1D systems are discussed.

85 citations

Journal ArticleDOI
TL;DR: Using spin-resolved scanning tunneling spectroscopy with simulations, it is demonstrated that the pair of peaks associated with the YSR states of an individual Fe atom coupled to an oxygen-reconstructed Ta surface gets spin polarized in an external magnetic field.
Abstract: A magnetic atom in a superconducting host induces so-called Yu-Shiba-Rusinov (YSR) bound states inside the superconducting energy gap. By combining spin-resolved scanning tunneling spectroscopy wit ...

85 citations

Journal ArticleDOI
TL;DR: In this article, a scanning tunneling microscope was used to directly deposit nanometer-scale structures into the input coil of a planar dc superconducting quantum interference device microsusceptometer.
Abstract: A scanning tunneling microscope has been used to directly deposit nanometer‐scale structures into the input coil of a planar dc superconducting quantum interference device microsusceptometer. Iron pentacarbonyl was used as the source gas for the deposits, yielding dots with diameters ranging from 10 to 30 nm and heights from 30 to 100 nm. Measurements on the particles at low temperatures show them to be magnetic and reveal macroscopic spin properties.

85 citations

Journal ArticleDOI
TL;DR: Two reproducible new phases of 2D boron sheets have been found on Ag(1 1’�1 and one of them shares the identical atomic structure of the previously reported S1 phase but has a different rotational relationship with the substrate, and thus exhibits very different features in scanning tunneling microscopy (STM) images.
Abstract: Two reproducible new phases of 2D boron sheets have been found on Ag(1 1 1). One of them shares the identical atomic structure of the previously reported S1 phase (β 12 sheet) but has a different rotational relationship with the substrate, and thus exhibits very different features in scanning tunneling microscopy (STM) images. The other new phase has a hexagonal symmetry and is proposed to be the long-expected α-sheet. Both of these two boron sheets are confirmed to be metallic by scanning tunneling spectroscopy.

85 citations

Journal ArticleDOI
TL;DR: In this paper, single-walled carbon nanotubes (SWNTs) have been studied on a Si(100)-2×1:H surface using an ultrahigh-vacuum (UHV) scanning tunneling microscope (STM).
Abstract: Single-walled carbon nanotubes (SWNTs) have been studied on a Si(100)-2×1:H surface using an ultrahigh-vacuum (UHV) scanning tunneling microscope (STM). Dry deposition of SWNTs in situ establishes the pristine interface necessary to elucidate fundamental physical and electronic interactions between SWNTs and silicon. We have achieved simultaneous atomic resolution STM images of isolated SWNTs and the local H-passivated Si(100) substrate. Scanning tunneling spectroscopy served to characterize both semiconducting and metallic SWNTs. In each case, electronic features unique to the nanotube can be identified within the substrate band gap. In contrast to previous UHV STM studies of SWNTs on Au(111), our investigation is motivated by the technological relevance of the Si(100) substrate and the potential for nanofabrication of hybrid SWNT-Si electronic devices on the Si(100)-2×1:H platform.

85 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202345
202289
2021128
2020143
2019134
2018159