Spatially inhomogeneous inelastic electron tunneling in oxygen-ethylene complexes on Ag(110) resolved with a scanning tunneling microscope

2009 ◽  
Vol 80 (16) ◽  
Author(s):  
J. R. Hahn ◽  
W. Ho
Keyword(s):  
Scanning Tunneling Microscope ◽  
Electron Tunneling ◽  
Scanning Tunneling ◽  
Inelastic Electron ◽  
Tunneling Microscope ◽  
Spatially Inhomogeneous ◽  
Inelastic Electron Tunneling

scholarly journals Quantum stochastic resonance of individual Fe atoms

2021 ◽  
Vol 7 (33) ◽  
pp. eabg2616
Author(s):  
Max Hänze ◽  
Gregory McMurtrie ◽  
Susanne Baumann ◽  
Luigi Malavolti ◽  
Susan N. Coppersmith ◽  
...  
Keyword(s):  
Stochastic Resonance ◽  
Excited States ◽  
Scanning Tunneling Microscope ◽  
Electron Tunneling ◽  
Spin Dynamics ◽  
General Mechanism ◽  
Scanning Tunneling ◽  
Inelastic Electron ◽  
Crossover Region ◽  
Inelastic Electron Tunneling

Stochastic resonance, where noise synchronizes a system’s response to an external drive, is a wide-reaching phenomenon found in noisy systems spanning from the dynamics of neurons to the periodicity of ice ages. Quantum tunneling can extend stochastic resonance to the quantum realm. We demonstrate quantum stochastic resonance for magnetic transitions in atoms by inelastic electron tunneling with a scanning tunneling microscope. Stochastic resonance is shown deep in the quantum regime, where spin-state fluctuations are driven by tunneling of the magnetization, and in a semiclassical crossover region, where thermally excited electrons drive transitions between ground and excited states. Inducing synchronization by periodically modulating transition rates provides a general mechanism to determine real-time spin dynamics ranging from milliseconds to picoseconds.

Spin-polarized electron tunneling detected using a scanning tunneling microscope

1997 ◽  
Vol 386 (1-3) ◽  
pp. 311-314 ◽  
Author(s):  
Zhanghua Wu ◽  
Tomonobu Nakayama ◽  
Makoto Sakurai ◽  
Masakazu Aono
Keyword(s):  
Scanning Tunneling Microscope ◽  
Electron Tunneling ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Spin Polarized

scholarly journals Molecular attachment to a microscope tip: inelastic tunneling, Kondo screening, and thermopower

2019 ◽  
Vol 10 ◽  
pp. 1243-1250
Author(s):  
Rouzhaji Tuerhong ◽  
Mauro Boero ◽  
Jean-Pierre Bucher
Keyword(s):  
Single Molecule ◽  
Electron Tunneling ◽  
Vibrational Excitation ◽  
Scanning Tunneling ◽  
Clear Correlation ◽  
Inelastic Electron ◽  
Free Standing ◽  
Molecule Junction ◽  
Inelastic Electron Tunneling ◽  
Electron Tunneling Spectroscopy

The vibrational excitation related transport properties of a manganese phthalocyanine molecule suspended between the tip of a scanning tunneling microsope (STM) and a surface are investigated by combining the local manipulation capabilities of the STM with inelastic electron tunneling spectroscopy. By attachment of the molecule to the probe tip, the intrinsic physical properties similar to those exhibited by a free standing molecule become accessible. This technique allows one to study locally the magnetic properties, as well as other elementary excitations and their mutual interaction. In particular a clear correlation is observed between the Kondo resonance and the vibrations with a strong incidence of the Kondo correlation on the thermopower measured across the single-molecule junction.

scholarly journals Selective Excitations of Transverse Vibrational Modes of a Carbon Nanotube through a “Shuttle-Like” Electromechanical Instability

2010 ◽  
Vol 2010 ◽  
pp. 1-5
Author(s):  
F. Santandrea
Keyword(s):  
Carbon Nanotube ◽  
Scanning Tunneling Microscope ◽  
Electron Tunneling ◽  
Selective Excitation ◽  
Scanning Tunneling ◽  
Vibrational Modes ◽  
Tunneling Microscope ◽  
Electromechanical Instability ◽  
Nano Electromechanical System ◽  
Transverse Oscillations

We study the dynamics of transverse oscillations of a suspended carbon nanotube into which electron current is injected from the tip of a scanning tunneling microscope (STM). In this case the correlations between the displacement of the nanotube and its charge state, determined by the position-dependent electron tunneling rate, can lead to a “shuttle-like” instability for the transverse vibrational modes. We find that selective excitation of a specific mode can be achieved by an accurate positioning of the STM tip. This result suggests a feasible way to control the dynamics of this nano-electromechanical system (NEMS) based on the “shuttle instability.”

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 Binding Behavior of Carbonmonoxide to Gold Atoms on Ag(001)

2020 ◽  
Vol 63 (15-18) ◽  
pp. 1578-1584
Author(s):  
David Kuhness ◽  
Jagriti Pal ◽  
Hyun Jin Yang ◽  
Nisha Mammen ◽  
Karoliina Honkala ◽  
...  
Keyword(s):  
Binding Sites ◽  
Density Functional ◽  
Electron Tunneling ◽  
Scanning Tunneling ◽  
Inelastic Electron ◽  
Tunneling Microscopy ◽  
Binding Behavior ◽  
Inelastic Electron Tunneling ◽  
Experimental Findings ◽  
Electron Tunneling Spectroscopy

AbstractThe adsorption behavior of single CO molecules at 4 K bound to Au adatoms on a Ag(001) metal surface is studied with scanning tunneling microscopy (STM) and inelastic electron tunneling spectroscopy (IETS). In contrast to earlier observations two different binding configurations are observed—one on top of a Au adatom and the other one adsorbed laterally to Au on Ag(001). Moreover, IETS reveals different low-energy vibrational energies for the two binding sites as compared to the one for a single CO molecule bound to Ag(001). Density functional theory (DFT) calculations of the adsorption energies, the diffusion barriers, and the vibrational frequencies of the CO molecule on the different binding sites rationalize the experimental findings.

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