By using scanning tunneling microscope (STM) break-junction technique, the switching events of electrical current from single molecule bridge tuning by electrochemical gating are investigated to uncover the rel
The Scanning Tunneling Microscope is not only an excellent tool to image molecules and atoms at surfaces, it can also be used to trigger chemical reactions. By employing voltage pulses via the STM tip or by tuning the bias potential between tip and sample, reactions can be induced at the tin...
Physics - Chemical PhysicsHere, we introduce and experimentally demonstrate optical amplification and stimulated emission from a single optically pumped molecular tunneling junction of a scanning tunneling microscope. The gap between a sharp gold tip and a flat gold substrate covered with a self-...
1. A scanning magnetic microscope, comprising: a specimen stage for holding a specimen to be examined; a magnetic tunneling junction (MTJ) sensor for sensing a magnetic field generated by said specimen; translation means for translating said MTJ sensor relative to a surface of said specimen; and...
Cooling the junction of a scanning tunneling microscope to millikelvin temperatures is fundamental for high-resolution scanning tunneling spectroscopy. However, accurately determining the junction temperature has proven elusive, due to the microscopic dimension of the junction and its continuous energy ...
In particular, a gap plasmon in a scanning tunneling microscope (STM) junction is of key interest to nanoscale imaging and spectroscopy. Here we show that spectral features of a plasmonic STM junction can be manipulated by nanofabrication of Au tips using focused ion beam. An exemplary Fabry-...
tunnelingluminescenceTunnelElectroluminescence from a p-type Ga As(110)surface was induced by tunneling electrons in a scanning tunneling microscope under both polarities of bias voltage.The optical spectra exhibit a polarity-independent luminescence peak at 1.47 eV resulting from the exciton recombination...
E. Martinez, “Laser field enhancement at the scanning tunneling microscope junction measured by optical rectification,” Appl. Phys. Lett. 72, 2075–2077 (1998).A. V. Bragas, S. M. Landi, and O. E. Martinez, ``Laser field enhancement at the scanning tunneling microscope junc- tion ...
Scanning tunneling microscopy (STM) [1] is an outstanding tool for probing electronic structures and surface morphologies at the nanoscale. In a scanning tunneling microscope, a metallic tip moves above the surface in a raster-like manner and measures variations in the quantum mechanical tunneling ...
Presents information on a model for a lumped element circuit of a junction mixing scanning tunneling microscope. Details on the model; Information on tests of the response of the model.Steeves G.M.Elezzabi A.Y.IEEE Journal of Quantum Electronics: A Publication of the IEEE Quantum Electronics ...