scholarly journals The effect of strain on tunnel barrier height in silicon quantum devices

2020 ◽  
Vol 128 (2) ◽  
pp. 024303
Author(s):  
Ryan M. Stein ◽  
M. D. Stewart
2021 ◽  
Vol 129 (22) ◽  
pp. 225301
Author(s):  
V. J. S. Oldenkotte ◽  
F. J. Witmans ◽  
M. H. Siekman ◽  
P. L. de Boeij ◽  
K. Sotthewes ◽  
...  

2003 ◽  
Vol 541 (1-3) ◽  
pp. L643-L648 ◽  
Author(s):  
Martin Hugelmann ◽  
Werner Schindler

2006 ◽  
Vol 961 ◽  
Author(s):  
Hideo Kaiju ◽  
Kenji Kondo ◽  
Akira Ishibashi

ABSTRACTWe calculated transport properties of edge-to-edge quantum cross structure that consists of two metal nano-ribbons having edge-to-edge configuration with a tunnel barrier and showed current-voltage characteristics depending on the metal-ribbon thickness (5-30 nm), the barrier height (0.5-1.5 eV) and the barrier thickness (0.5-1.0 nm). Interesting behavior of transport properties is that the metal-ribbon thickness affects the current density due to the quantization of nano-ribbon and also the current density, being dependent on the barrier height and the barrier thickness, decreases with high and thick barrier. These calculated results indicate that we can precisely obtain the information on the material sandwiched between two electrodes, such as the barrier height and the barrier thickness, by a fit of experimental data to our derived equation, and these approaches result in a distinction between the sandwiched material and the electrode.


2009 ◽  
Vol 94 (15) ◽  
pp. 152101 ◽  
Author(s):  
J. C. Le Breton ◽  
H. Saito ◽  
S. Yuasa ◽  
K. Ando

2016 ◽  
Vol 25 (2) ◽  
pp. 027304
Author(s):  
Gui-fang Li ◽  
Jing Hu ◽  
Hui Lv ◽  
Zhijun Cui ◽  
Xiaowei Hou ◽  
...  

Author(s):  
Octavio de los Santos ◽  
Ricardo Roman Ancheyta

Abstract The proper functioning of some micro-fabricated novel quantum devices, such as superconducting resonators and qubits, is severely affected by the presence of parasitic structural material defects known as tunneling two-level-systems (TLS). Recent experiments have reported unambiguous evidence of the strong interaction between individual (coherent) TLS using strain-assisted spectroscopy. This work provides an alternative and simple theoretical insight that illustrates how to obtain the spectral response of such strongly interacting defects residing inside the amorphous tunnel barrier of a qubit's Josephson junction. Moreover, the corresponding spectral signatures obtained here may serve to quickly and efficiently elucidate the actual state of these interacting TLS in experiments based on strain- or electric-field spectroscopy.


Author(s):  
Kellye S Curtis ◽  
Christopher J B Ford ◽  
David Anderson ◽  
Harvey E Beere ◽  
Ian Farrer ◽  
...  

2002 ◽  
Vol 716 ◽  
Author(s):  
K.L. Ng ◽  
N. Zhan ◽  
M.C. Poon ◽  
C.W. Kok ◽  
M. Chan ◽  
...  

AbstractHfO2 as a dielectric material in MOS capacitor by direct sputtering of Hf in an O2 ambient onto a Si substrate was studied. The results showed that the interface layer formed between HfO2 and the Si substrate was affected by the RTA time in the 500°C annealing temperature. Since the interface layer is mainly composed of hafnium silicate, and has high interface trap density, the effective barrier height is therefore lowered with increased RTA time. The change in the effective barrier height will affect the FN tunneling current and the operation of the MOS devices when it is applied for nonvolatile memory devices.


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