2010年1月10日 · Ultralow-temperature (down to 0.40 K) scanning tunnelling spectroscopy (STS) on the SIC phase reveals a clear signature of superconductivity. Figure 2 a shows the tunnelling spectra taken on the...

By studying epitaxially grown Pb thin films, this paper explores a new regime in the physics of uniform 2D superconductivity, in which the spin–orbit coupling-induced Rashba splitting is larger than the superconducting gap.

2015年4月14日 · The type I superconductor lead (Pb) has been theoretically predicted to be a two-band superconductor. We use scanning tunneling spectroscopy (STS) to resolve two superconducting gaps with an energy difference of 150 μ eV. Tunneling into Pb(111), Pb(110), and Pb(100) crystals reveals a strong dependence of the two coherence peak intensities on ...

2014年12月15日 · Here we show that a spatial variation in the intensity of the S–O coupling in graphene induced by the partial intercalation of heavy atoms, such as Pb, with the appropriate symmetries generates a...

2010年8月1日 · We have studied the superconductivity of Pb ultra-thin films with thickness from 1 monolayer (ML) to 7 ML grown on Si (111) by molecular beam epitaxy. In situ low temperature scanning tunneling...

We report high-resolution scanning tunneling microscopy (STM) study of nano-sized Pb islands grown on SrTiO_3, where three distinct types of gaps with different energy scales are revealed.

2013年6月25日 · In this paper, we report the superconductivity of Pb islands measured by scanning tunneling spectroscopy (STS) at improved instrumental conditions with an energy resolution of 0.2 meV. By analyzing the temperature dependence of tunneling spectra for a given Pb island, we clearly reveal that the pseudogap state changes its temperature dependence ...

2022年10月25日 · Here, we have systematically studied a monatomic Ni Kagome lattice grown on Pb (111) by scanning tunneling microscopy/spectroscopy (STM/STS) and density functional theory (DFT). Sawtooth edge structures with distinct heights due to subsurface Ni atoms have been revealed, leading to asymmetric edge scattering of surface electrons on Pb (111).

2011年3月1日 · Through recent scanning tunneling spectroscopy (STS) experiments, Pb has been shown to superconduct in samples comprised of only a single layer of atoms. This result, described as two-dimensional superconductivity, contrasts the predictions of the Mermin–Wagner theorem [7] which prohibits spontaneous symmetry-breaking in systems of dimensions ...

铅铋(Pb-Bi)合金超导材料被广泛研究, 但对其低温物相的结构和超导物性却知之甚少. 本文采用低温共沉积和低温退火的方法, 在Si(111)-(7 × 7)衬底生长的Bi(111)超薄薄膜上制备了铅铋合金薄膜, 利用扫描隧道显微术对其结构和电子学性质进行表征.