scholarly journals A 350 mK, 9 T scanning tunneling microscope for the study of superconducting thin films on insulating substrates and single crystals

2013 ◽  
Vol 84 (12) ◽  
pp. 123905 ◽  
Author(s):  
Anand Kamlapure ◽  
Garima Saraswat ◽  
Somesh Chandra Ganguli ◽  
Vivas Bagwe ◽  
Pratap Raychaudhuri ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Superconducting Thin Films ◽  
Tunneling Microscope ◽  
Insulating Substrates

scholarly journals Note: Long-range scanning tunneling microscope for the study of nanostructures on insulating substrates

2014 ◽  
Vol 85 (2) ◽  
pp. 026105 ◽  
Author(s):  
Aday J. Molina-Mendoza ◽  
José G. Rodrigo ◽  
Joshua Island ◽  
Enrique Burzuri ◽  
Gabino Rubio-Bollinger ◽  
...  
Keyword(s):  
Long Range ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Tunneling Microscope ◽  
Range Scanning ◽  
Insulating Substrates

Scanning Tunneling Microscope Studies of Bi2Sr2CaCu2Ox Single Crystals

1993 ◽  
Vol 129 ◽  
pp. 85-98
Author(s):  
Jin Xi Liu ◽  
S.W. Pierson ◽  
G.C. Spalding ◽  
Ji Chun Wan ◽  
A.M. Goldman
Keyword(s):  
Single Crystals ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Tunneling Microscope

Ultrahigh vacuum STM studies of the Bi–O surface of Bi2212

1992 ◽  
Vol 7 (5) ◽  
pp. 1060-1062 ◽  
Author(s):  
Kazuto Ikeda ◽  
Kenshi Takamuku ◽  
Koji Yamaguchi ◽  
Rittaporn Itti ◽  
Naoki Koshizuka
Keyword(s):  
Single Crystals ◽  
Scanning Tunneling Microscope ◽  
Ultrahigh Vacuum ◽  
Atomic Resolution ◽  
Scanning Tunneling ◽  
Tunneling Microscope

Observations of the Bi–O surface of superconductive Bi2212 single crystals were carried out using an ultrahigh-vacuum scanning tunneling microscope (UHV-STM). In the atomic resolution images, surface corrugations, which correspond to the superstructure of the Bi–O surface in addition to Bi atom deficiencies, were observed. There were hollow lines along the ridges of the corrugations, which may be due to missing atom rows.

Surface Modification and Measurement Using a Scanning Tunneling Microscope With a Diamond Tip

1992 ◽  
Vol 114 (3) ◽  
pp. 493-498 ◽  
Author(s):  
D. B. Bogy
Keyword(s):  
Thin Films ◽  
Scanning Tunneling Microscope ◽  
Scanning Tunneling ◽  
Magnetic Media ◽  
Tunneling Microscopy ◽  
Tunneling Microscope ◽  
Hardness Tester ◽  
Excellent Control ◽  
Subsequent Measurement ◽  
Normal Head

Scanning Tunneling Microscopy is used to modify and measure the surface of magnetic media disks. A very rugged diamond tip allows continued scanning after it has severely scratched or punched the surface. Three techniques are used. First a manual method of penetrating the surface using a stand-alone head makes a scratch of essentially uncontrollable length and depth. Then the normal head is used to cause surface penetration by removing the bias voltage while scanning. Better control is obtained as regards the location and depth of the indentation. Excellent control of indentation location and depth can be obtained by using a new software developed by the STM manufacturer to push the tip into the surface with the piezoelectric scanner. The control of the indentations and their subsequent measurement may make the STM a useful tool as a hardness tester for ultra-thin films, on the order of a few tens of nanometers.

TUNNELING ASYMMETRY IN SUPERCONDUCTING Nd1Ba2Cu3Oy SINGLE CRYSTALS

1999 ◽  
Vol 13 (21) ◽  
pp. 735-742 ◽  
Author(s):  
A. T. WU ◽  
N. KOSHIZUKA ◽  
S. TANAKA
Keyword(s):  
Single Crystals ◽  
Scanning Tunneling Microscope ◽  
Theoretical Models ◽  
Charge Carriers ◽  
Scanning Tunneling ◽  
S Wave ◽  
Tunneling Microscope ◽  
Wave Symmetry ◽  
Atomically Flat ◽  
Pairing Potential

Clean, stable, and atomically flat (001) surfaces of the as-prepared Nd 1 Ba 2 Cu 3 O y (Nd123) single crystals have been investigated using a Low Temperature UltraHigh Vacuum Scanning Tunneling Microscope/Spectroscopy (STM/STS) system at 10 K. Several sets of highly reproducible STS data show the existence of an asymmetry in the tunneling spectra in superconducting Nd123 single crystals. The asymmetry is found to be intrinsic and can be explained by assuming that the pairing potential is a function of the kinetic energy of the charge carriers. The STS data are compared with the predictions of different theoretical models. The data on the (001) surfaces may be better fitted by assuming an S wave symmetry. Pure d(x2-y2) symmetry is ruled out.

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