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Measurement of the conductance of a hydrogen molecule
Recent years have shown steady progress towards molecular electronics, in which molecules form basic components such as switches, diodes and electronic mixers. Often, a scanning tunnelling microscopeExpand
Scanning tunneling spectroscopy on the novel superconductor CaC6.
We present scanning tunneling microscopy and spectroscopy of the newly discovered superconductor CaC6. The tunneling conductance spectra, measured between 3 and 15 K, show a clear superconducting gapExpand
Quasiparticle spectra of 2 H -NbSe 2 : Two-band superconductivity and the role of tunneling selectivity
We have studied the superconducting state of 2H−NbSe2 by scanning tunneling spectroscopy along two different crystal orientations, the c and the a/b axes. Along the c axis a large gap is dominant inExpand
Local symmetries and order-disorder transitions in small macroscopic Wigner islands.
The influence of local order on the disordering scenario of small Wigner islands is discussed. A first disordering step is put in evidence by the time correlation functions and is linked toExpand
Disorder effects in pnictides: a tunneling spectroscopy study.
We present the synthesis and the tunneling spectroscopy study of superconducting FeSe(0.5)Te(0.5) (T(c) = 14 K), SmFeAsO(0.85) (T(c) = 54 K) and SmFeAsO(0.9)F(0.1) (T(c) = 45 K). The samples wereExpand
ac electric and magnetic responses of nonconnected Aharonov-Bohm rings
The signature of phase coherence on the electric and magnetic response of 10 5 nonconnected Aharonov-Bohm rings is measured by a resonant method at 350 MHz between 20 mK and 500 mK. The rings areExpand
Conductance of single-atom platinum contacts: Voltage dependence of the conductance histogram
The conductance of a single-atom contact is sensitive to the coupling of this contact atom to the atoms in the leads. Notably for the transition metals this gives rise to a considerable spread in theExpand
Signatures of multigap superconductivity in tunneling spectroscopy
We considered a two-band superconductor with a nonzero interband quasiparticle coupling and numerically generated partial elementary excitation spectra for each band. These show deviations from theExpand
Effect of disorder on the conductance of a Cu atomic point contact
We present a systematic study of the effect of the disorder in copper point contacts. We show that peaks in the conductance histogram of copper point contacts shift upon addition of nickelExpand
Unconventional superconductivity in ultrathin superconducting NbN films studied by scanning tunneling spectroscopy
Using scanning tunneling spectroscopy, we address the problem of the superconductor-insulator phase transition in homogeneously disordered ultrathin (2-15 nm) films of NbN. Samples thicker than 8 nm,Expand