The electrical resistivity of rough thin films: A model based on electron reflection at discrete step edges

2018 ◽  
Vol 123 (15) ◽  
pp. 155107 ◽  
Author(s):  
Tianji Zhou ◽  
Pengyuan Zheng ◽  
Sumeet C. Pandey ◽  
Ravishankar Sundararaman ◽  
Daniel Gall
AIP Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 045124
Author(s):  
Cacie Hart ◽  
Zoey Warecki ◽  
Grace Yong ◽  
David Houston ◽  
Rajeswari Kolagani

2012 ◽  
Vol 45 (23) ◽  
pp. 9531-9538 ◽  
Author(s):  
P. Stasiak ◽  
J. D. McGraw ◽  
K. Dalnoki-Veress ◽  
M. W. Matsen

1995 ◽  
Vol 395 ◽  
Author(s):  
R.D. Vispute ◽  
H. Wu ◽  
K. Jagannadham ◽  
J. Narayan

ABSTRACTAIN thin films have been grown epitaxially on Si(111) and Al2O3(0001) substrates by pulsed laser deposition. These films were characterized by FTIR and UV-Visible, x-ray diffraction, high resolution transmission electron and scanning electron microscopy, and electrical resistivity. The films deposited on silicon and sapphire at 750-800°C and laser energy density of ∼ 2 to 3J/cm2 are epitaxial with an orientational relationship of AIN[0001]║ Si[111], AIN[2 110]║Si[011] and AlN[0001]║Al2O3[0001], AIN[1 2 1 0]║ Al2O3[0110] and AIN[1010] ║ Al2O3[2110]. The both AIN/Si and AIN/Al2O3 interfaces were found to be quite sharp without any indication of interfacial reactions. The absorption edge measured by UV-Visible spectroscopy for the epitaxial AIN film grown on sapphire was sharp and the band gap was found to be 6.1eV. The electrical resistivity of the films was about 5-6×l013Ω-cm with a breakdown field of 5×106V/cm. We also found that the films deposited at higher laser energy densities ≥10J/cm2 and lower temperatures ≤650°C were nitrogen deficient and containing free metallic aluminum which degrade the microstructural, electrical and optical properties of the AIN films


2014 ◽  
Vol 11 (9-10) ◽  
pp. 1423-1426 ◽  
Author(s):  
Yutaka Sakurai ◽  
Yuya Takeda ◽  
Shinji Ikeda ◽  
Yoshinori Sakamoto

2021 ◽  
Author(s):  
Ningning Wang ◽  
Mingwei Yang ◽  
Keyu Chen ◽  
Zhen Yang ◽  
Hua Zhang ◽  
...  

Abstract The successful synthesis of superconducting nickelate thin films with the highest Tc ~ 15 K has reignited great enthusiasms on this class of potential analogue to high-Tc cuprates suggested decades ago. To pursue higher Tc is always an important task in studying new superconductors. Here we report for the first time the effect of pressure on the superconducting properties of infinite-layer Pr0.82Sr0.18NiO2 thin films by measuring electrical resistivity under various pressures in a cubic anvil cell apparatus. We find that the onset of superconductivity, Tconset, can be enhanced monotonically from ~ 18 K at ambient pressure to ~ 31 K without showing signatures of saturation upon increasing pressure to 12.1 GPa in the presence of liquid pressure transmitting medium. This encouraging result indicates that the Tc of infinite-layer nickelates superconductors can be further raised up by applying higher pressures or strain engineering in the heterostructure films. In addition to the pressure effect, we also discussed the influence of stress/strain on the superconducting properties of the nickelate thin films.


1973 ◽  
Vol 18 (1) ◽  
pp. 71-75 ◽  
Author(s):  
B.M.S. Bist ◽  
O.N. Srivastava

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