In situ tip exchange for an ultrahigh vacuum scanning tunneling microscope using dual‐axes piezoelectric micropositioners

1992 ◽  
Vol 63 (12) ◽  
pp. 5644-5648 ◽  
Author(s):  
F. Osaka ◽  
T. Kato
2019 ◽  
Vol 196 ◽  
pp. 180-185
Author(s):  
Syu-You Guan ◽  
Hsien-Shun Liao ◽  
Bo-Jing Juang ◽  
Shu-Cheng Chin ◽  
Tien-Ming Chuang ◽  
...  

2007 ◽  
Vol 50 (1) ◽  
pp. 129-132 ◽  
Author(s):  
S. I. Oreshkin ◽  
V. N. Mantsevich ◽  
D. A. Muzychenko ◽  
A. I. Oreshkin ◽  
V. I. Panov ◽  
...  

2007 ◽  
Vol 50 (3) ◽  
pp. 422-423
Author(s):  
B. A. Loginov ◽  
K. N. El’tsov ◽  
S. V. Zaitsev-Zotov ◽  
A. N. Klimov ◽  
V. M. Shevlyuga

2003 ◽  
Vol 10 (06) ◽  
pp. 963-980 ◽  
Author(s):  
SHUJI HASEGAWA ◽  
ICHIRO SHIRAKI ◽  
FUHITO TANABE ◽  
REI HOBARA ◽  
TAIZO KANAGAWA ◽  
...  

For in-situ measurements of the local electrical conductivity of well-defined crystal surfaces in ultrahigh vacuum, we have developed two kinds of microscopic four-point probe methods. One involves a "four-tip STM prober," in which four independently driven tips of a scanning tunneling microscope (STM) are used for measurements of four-point probe conductivity. The probe spacing can be changed from 500 nm to 1 mm. The other method involves monolithic micro-four-point probes, fabricated on silicon chips, whose probe spacing is fixed around several μm. These probes are installed in scanning-electron-microscopy/electron-diffraction chambers, in which the structures of sample surfaces and probe positions are observed in situ. The probes can be positioned precisely on aimed areas on the sample with the aid of piezoactuators. By the use of these machines, the surface sensitivity in conductivity measurements has been greatly enhanced compared with the macroscopic four-point probe method. Then the conduction through the topmost atomic layers (surface-state conductivity) and the influence of atomic steps on conductivity can be directly measured.


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