scholarly journals Three-dimensional strain engineering in epitaxial vertically aligned nanocomposite thin films with tunable magnetotransport properties

2018 ◽  
Vol 5 (3) ◽  
pp. 536-544 ◽  
Author(s):  
Xing Sun ◽  
Jijie Huang ◽  
Jie Jian ◽  
Meng Fan ◽  
Han Wang ◽  
...  

A novel three-dimensional (3D) framework with integrated lateral and vertical interfaces, enables the power of 3D strain tuning and improves its electrical transport properties.

Author(s):  
Hua Li ◽  
Gang Li

In this work, we model the strain effects on the electrical transport properties of Si/Ge nanocomposite thin films. We utilize a two-band k·p theory to calculate the variation of the electronic band structure as a function of externally applied strains. By using the modified electronic band structure, electrical conductivity of the Si/Ge nanocomposites is calculated through a self-consistent electron transport analysis, where a nonequilibrium Green’s function (NEGF) is coupled with the Poisson equation. The results show that both the tensile uniaxial and biaxial strains increase the electrical conductivity of Si/Ge nanocomposite. The effects are more evident in the biaxial strain cases.


2020 ◽  
Vol 10 (1) ◽  
Author(s):  
A. Jantayod ◽  
D. Doonyapisut ◽  
T. Eknapakul ◽  
M. F. Smith ◽  
W. Meevasana

Abstract The electrical transport properties of a thin film of the diamondoid adamantane, deposited on an Au/W substrate, were investigated experimentally. The current I, in applied potential V, from the admantane-thiol/metal heterstructure to a wire lead on its surface exhibited non-symmetric (diode-like) characteristics and a signature of resistive switching (RS), an effect that is valuable to non-volatile memory applications. I(V) follows a hysteresis curve that passes twice through $$I(0)=0$$ I ( 0 ) = 0 linearly, indicating RS between two states with significantly different conductances, possibly due to an exotic mechanism.


2021 ◽  
pp. 100113
Author(s):  
Jyoti Yadav ◽  
Rini Singh ◽  
M.D. Anoop ◽  
Nisha Yadav ◽  
N. Srinivasa Rao ◽  
...  

2016 ◽  
Vol 55 (4S) ◽  
pp. 04EJ08
Author(s):  
Akihiro Tsuruta ◽  
Yusuke Tsujioka ◽  
Yutaka Yoshida ◽  
Ichiro Terasaki ◽  
Norimitsu Murayama ◽  
...  

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Mingjia Yao ◽  
Yuxiang Wang ◽  
Xin Li ◽  
Ye Sheng ◽  
Haiyang Huo ◽  
...  

AbstractSince the proposal of the “Materials Genome Initiative”, several material databases have emerged and advanced many materials fields. In this work, we present the Materials Informatics Platform with Three-Dimensional Structures (MIP-3d). More than 80,000 structural entries, mainly from the inorganic crystal structural database, are included in MIP-3d. Density functional theory calculations are carried out for over 30,000 entries in the database, which contain the relaxed crystal structures, density of states, and band structures. The calculation of the equations of state and sound velocities is performed for over 12,000 entries. Notably, for entries with band gap values larger than 0.3 eV, the band degeneracies for the valence band maxima and the conduction band minima are analysed. The electrical transport properties for approximately 4,400 entries are also calculated and presented in MIP-3d under the constant electron-phonon coupling approximation. The calculations of the band degeneracies and electrical transport properties make MIP-3d a database specifically designed for thermoelectric applications.


2019 ◽  
Vol 256 (5) ◽  
pp. 1800735 ◽  
Author(s):  
Qiu Lin Li ◽  
Xing Hua Zhang ◽  
Wen Jie Wang ◽  
Zhi Qing Li ◽  
Ding Bang Zhou ◽  
...  

1981 ◽  
Vol 78 (4) ◽  
pp. 377-383 ◽  
Author(s):  
P.C. Mathur ◽  
Anil Kumar ◽  
O.P. Taneja ◽  
A.L. Dawar

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