scholarly journals Room-temperature tunnel current amplifier and experimental setup for high resolution electronic spectroscopy in millikelvin scanning tunneling microscope experiments

2006 ◽  
Vol 77 (12) ◽  
pp. 123701 ◽  
Author(s):  
Hélène le Sueur ◽  
Philippe Joyez
Keyword(s):  
High Resolution ◽  
Scanning Tunneling Microscope ◽  
Room Temperature ◽  
Electronic Spectroscopy ◽  
Scanning Tunneling ◽  
Experimental Setup ◽  
Tunnel Current ◽  
Current Amplifier ◽  
Tunneling Microscope

scholarly journals A “Pushy” Microscope

1996 ◽  
Vol 4 (2) ◽  
pp. 3-4
Author(s):  
Stephen W. Carmichael
Keyword(s):  
Scanning Tunneling Microscope ◽  
Low Temperatures ◽  
Research Laboratory ◽  
Room Temperature ◽  
Scientific Research ◽  
Thermal Motion ◽  
Scanning Tunneling ◽  
Two Dimensional ◽  
Tunneling Microscope ◽  
Dimensional Surface

The process of ultra-miniaturization has been termed nanofabrication. It looks like the scanning tunneling microscope (STU) and related microscopes will be players in this technology of the future. One of the most recent contributions has been the demonstration that single molecules can be “pushed” across a surface with the STM. This remarkable achievement was demonstrated by Thomas Jung, Reto Schlittler, and James Gimzewski of the IBM Zurich Research Laboratory and Hao Tang and Christian Joachim of the National Center for Scientific Research in Toulouse, They were able to position intact individual molecules on a two-dimensional surface at room temperature by a controlled “pushing” action of the tip of a STM. Similar positioning feats have been done at low temperatures while thermal motion is limited.

ROOM TEMPERATURE TUNNELING CHARACTERISTICS OF ULTRA-SMALL NORMAL JUNCTIONS

1992 ◽  
Vol 06 (05) ◽  
pp. 273-280 ◽  
Author(s):  
M.D. REEVE ◽  
O.G. SYMKO ◽  
R. LI
Keyword(s):  
Scanning Tunneling Microscope ◽  
Coulomb Blockade ◽  
Room Temperature ◽  
Tunnel Junctions ◽  
Electron Tunneling ◽  
Single Electron ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Single Electron Tunneling ◽  
Coulomb Staircase

Tunneling studies between a Scanning Tunneling Microscope (STM)-controlled fine NbN tip and a NbN thin film show single electron tunneling characteristics at room temperature. The I-V curves display the Coulomb blockade and the Coulomb staircase caused by single electron charging of a series combination of two tunnel junctions. These room temperature observations indicate that it may be possible to operate single-electron-based devices in non-cryogenic regimes.

scholarly journals Stable Au–C bonds to the substrate for fullerene-based nanostructures

2017 ◽  
Vol 8 ◽  
pp. 1073-1079 ◽  
Author(s):  
Taras Chutora ◽  
Jesús Redondo ◽  
Bruno de la Torre ◽  
Martin Švec ◽  
Pavel Jelínek ◽  
...  
Keyword(s):  
Binding Energy ◽  
Carbon Atom ◽  
Scanning Tunneling Microscope ◽  
Room Temperature ◽  
Vacancy Defect ◽  
Low Energy ◽  
Scanning Tunneling ◽  
Ion Sputtering ◽  
Tunneling Microscope ◽  
Bright Spots

We report on the formation of fullerene-derived nanostructures on Au(111) at room temperature and under UHV conditions. After low-energy ion sputtering of fullerene films deposited on Au(111), bright spots appear at the herringbone corner sites when measured using a scanning tunneling microscope. These features are stable at room temperature against diffusion on the surface. We carry out DFT calculations of fullerene molecules having one missing carbon atom to simulate the vacancies in the molecules resulting from the sputtering process. These modified fullerenes have an adsorption energy on the Au(111) surface that is 1.6 eV higher than that of C60 molecules. This increased binding energy arises from the saturation by the Au surface of the bonds around the molecular vacancy defect. We therefore interpret the observed features as adsorbed fullerene-derived molecules with C vacancies. This provides a pathway for the formation of fullerene-based nanostructures on Au at room temperature.

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