scholarly journals Bound states of defects in superconducting LiFeAs studied by scanning tunneling spectroscopy

2012 ◽  
Vol 86 (17) ◽  
Author(s):  
S. Grothe ◽  
Shun Chi ◽  
P. Dosanjh ◽  
Ruixing Liang ◽  
W. N. Hardy ◽  
...  
Keyword(s):  
Bound States ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling

scholarly journals Quantum interference of impurity bound states in Bi2Sr2Ca(Cu1−xZnx)2O8+δprobed by scanning tunneling spectroscopy

2011 ◽  
Vol 84 (6) ◽  
Author(s):  
Tadashi Machida ◽  
Takuya Kato ◽  
Hiroshi Nakamura ◽  
Masaki Fujimoto ◽  
Takashi Mochiku ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Bound States ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling

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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