Observation of the quantum-confinement effect in individual β-FeSi2 nanoislands epitaxially grown on Si (111) surfaces using scanning tunneling spectroscopy

2006 ◽  
Vol 89 (12) ◽  
pp. 123104 ◽  
Author(s):  
Yoshiaki Nakamura ◽  
Ryota Suzuki ◽  
Masafumi Umeno ◽  
Sung-Pyo Cho ◽  
Nobuo Tanaka ◽  
...  
Keyword(s):  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Confinement Effect ◽  
Scanning Tunneling

Tunable Quantum Confinement Effect on Non-volatile Thin Film Polymer Memory Device

2008 ◽  
Author(s):  
Augustin J. Hong ◽  
Kang L. Wang ◽  
Wei Lek Kwan ◽  
Yang Yang ◽  
Dayanara Parra ◽  
...  
Keyword(s):  
Thin Film ◽  
Quantum Confinement ◽  
Quantum Confinement Effect ◽  
Memory Device ◽  
Confinement Effect ◽  
Film Polymer ◽  
Polymer Memory

Scanning-tunneling spectroscopy on conjugated polymer films

2003 ◽  
Vol 771 ◽  
Author(s):  
M. Kemerink ◽  
S.F. Alvarado ◽  
P.M. Koenraad ◽  
R.A.J. Janssen ◽  
H.W.M. Salemink ◽  
...  
Keyword(s):  
Polymer Films ◽  
Conjugated Polymer ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Direct Consequence ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Band Alignment ◽  
Scanning Tunneling ◽  
Order Of Magnitude

AbstractScanning-tunneling spectroscopy experiments have been performed on conjugated polymer films and have been compared to a three-dimensional numerical model for charge injection and transport. It is found that field enhancement near the tip apex leads to significant changes in the injected current, which can amount to more than an order of magnitude, and can even change the polarity of the dominant charge carrier. As a direct consequence, the single-particle band gap and band alignment of the organic material can be directly obtained from tip height-voltage (z-V) curves, provided that the tip has a sufficiently sharp apex.

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