Observation of the local density-of-states modulation in Bi2Sr1.6Gd0.4CuO6+δ by scanning tunneling microscopy

2008 ◽  
Vol 468 (11-12) ◽  
pp. 876-882 ◽  
Author(s):  
R. Saito ◽  
N. Tsuji ◽  
T. Noguchi ◽  
T. Machida ◽  
T. Kato ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
Density Of States ◽  
Local Density ◽  
Scanning Tunneling ◽  
Local Density Of States ◽  
Tunneling Microscopy

Local Electronic Structure in Ordered Aggregates of Carbon Nanotubes: Scanning Tunneling Microscopy/scanning Tunneling Spectroscopy Study

1998 ◽  
Vol 13 (9) ◽  
pp. 2389-2395 ◽  
Author(s):  
D. L. Carroll ◽  
P. M. Ajayan ◽  
S. Curran
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Local Density ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Spatially Resolved ◽  
Local Electronic Structure

The recent application of tunneling probes in electronic structure studies of carbon nanotubes has proven both powerful and challenging. Using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), local electronic properties in ordered aggregates of carbon nanotubes (multiwalled nanotubes and ropes of single walled nanotubes) have been probed. In this report, we present evidence for interlayer (concentric tube) interactions in multiwalled tubes and tube-tube interactions in singlewalled nanotube ropes. The spatially resolved, local electronic structure, as determined by the local density of electronic states, is shown to clearly reflect tube-tube interactions in both of these aggregate forms.

PHOTON EMISSION FROM TRANSITION METAL SURFACES IN SCANNING TUNNELING MICROSCOPY

1993 ◽  
Vol 07 (01n03) ◽  
pp. 516-519 ◽  
Author(s):  
RICHARD BERNDT ◽  
JAMES K. GIMZEWSKI
Keyword(s):  
Scanning Tunneling Microscope ◽  
Metal Surfaces ◽  
Light Emission ◽  
Local Density ◽  
Photon Emission ◽  
Scanning Tunneling ◽  
Local Density Of States ◽  
Tunneling Microscopy ◽  
Photon Intensity ◽  
Plasmon Modes

Light emission from noble metal surfaces excited by a scanning tunneling microscope has been interpreted as arising from in elastic tunneling excitation of tip-induced plasmon modes. We have extended this work to study the adsorption of oxygen on Ti and have observed the formation of structures with subnanometer lateral dimensions which give rise to clear contrasts in STM topographs and photon intensity maps. The experimental results strongly indicate that these contrasts are due to oxygen-induced variations of the local density of states.

Measurement of Local Density of States by Scanning Tunneling Spectroscopy at Low Temperature

1987 ◽  
Vol 26 (S3-1) ◽  
pp. 627 ◽  
Author(s):  
Hiroshi Bando ◽  
Hiroshi Tokumoto ◽  
Wataru Mizutani ◽  
Kazuhiro Endo ◽  
Shigeru Wakiyama ◽  
...  
Keyword(s):  
Low Temperature ◽  
Density Of States ◽  
Local Density ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Local Density Of States

FRACTAL FEATURES OF THE QUANTIZED SCANNING TUNNELING CURRENT AND THE LOCAL DENSITY OF STATES FOR A QUANTUM CORRAL

2018 ◽  
Vol 25 (04) ◽  
pp. 1850091 ◽  
Author(s):  
YOHHEI TATSUMI ◽  
SHIGENORI MITSUOKA ◽  
AKIRA TAMURA
Keyword(s):  
Density Of States ◽  
Size Dependence ◽  
Local Density ◽  
Tunneling Current ◽  
Real Space ◽  
Differential Conductance ◽  
Scanning Tunneling ◽  
Local Density Of States ◽  
Fractal Structures ◽  
First Time

We found that quantization of the scanning tunneling microscope (STM) current becomes apparent as the size of a quantum corral (QC) decreases and the corral thickness increases. It is shown that STM current images provide the position dependence of the conduction channels and local density of states (LDOS) images provide the spatial distribution of differential conductance channels. We clarified for the first time that there exist fractal structures in the QC size dependence of the [Formula: see text]–[Formula: see text] characteristic and in that of the LDOS. LDOS images also exhibit a fractal structure as a function of bias voltage. These results demonstrate fractal structures in energy space and real space. For an extremely large QC, we found that the [Formula: see text]–[Formula: see text] curve becomes Ohmic and the LDOS converges to a constant corresponding to the bulk two-dimensional density of states.

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