Electrode conformation-induced negative differential resistance and rectifying performance in a molecular device

2009 ◽  
Vol 95 (16) ◽  
pp. 163109 ◽  
Author(s):  
X. Q. Deng ◽  
J. C. Zhou ◽  
Z. H. Zhang ◽  
H. Zhang ◽  
M. Qiu ◽  
...  
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Device

Multipeak Negative-Differential-Resistance Molecular Device

Small ◽  
2008 ◽  
Vol 4 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Elad D. Mentovich ◽  
Itshak Kalifa ◽  
Alexander Tsukernik ◽  
Ariel Caster ◽  
Natalie Rosenberg-Shraga ◽  
...  
Keyword(s):  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Device

An Ab Initio Study on Negative Differential Resistance in Pyrrole Trimer Molecular Device

2010 ◽  
Vol 152-153 ◽  
pp. 931-934
Author(s):  
Cai Juan Xia ◽  
Han Chen Liu ◽  
Qiu Ping Wang
Keyword(s):  
Electronic Transport ◽  
First Principles ◽  
Negative Differential Resistance ◽  
Density Functional ◽  
Differential Resistance ◽  
Resonance Peak ◽  
Molecular Device ◽  
Transmission Resonance ◽  
Functional Theory ◽  
Theoretical Results

The electronic transport properties of pyrrole trimer sandwiched between two electrodes are investigated by using nonequilibrium Green’s function formalism combined first-principles density functional theory. Theoretical results show that the system manifests negative differential resistance (NDR) behavior. A detailed analysis of the origin of negative differential resistance has been given by observing the shift in transmission resonance peak across the bias window with varying bias voltage.

Theoretical investigation of the negative differential resistance in squashed C60 molecular device

2008 ◽  
Vol 92 (26) ◽  
pp. 263304 ◽  
Author(s):  
Zhi-Qiang Fan ◽  
Ke-Qiu Chen ◽  
Qing Wan ◽  
B. S. Zou ◽  
Wenhui Duan ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Negative Differential Resistance ◽  
Differential Resistance ◽  
Molecular Device

scholarly journals Elucidating Multiple Negative Differential Resistance and Rectification Ratio Through L-Aspartic Acid at Nanometre Scale Using Symmetrical Metal Electrodes

2021 ◽  
Author(s):  
Gaurav Sikri ◽  
Ravinder Singh Sawhney
Keyword(s):  
Work Function ◽  
Aspartic Acid ◽  
Negative Differential Resistance ◽  
Local Density ◽  
Differential Resistance ◽  
Theoretical Work ◽  
Molecular Device ◽  
Rectification Ratio ◽  
Generalized Gradient ◽  
Gold Silver

Abstract Protein-based electronics is one of the growing areas of bio-nanoelectronics, where novel electronic devices possessing distinctive properties, are being fabricated using specific proteins. Furthermore, if the bio-molecule is analysed amidst different electrodes, intriguing properties are elucidated. This research article investigates the electron transport properties of L-aspartic acid (i.e., L-amino acid) bound to symmetrical electrodes of gold, silver, copper, platinum and palladium employing NEGF-DFT approach using self-consistent function. The theoretical work function of different electrodes is calculated using local density approximation and generalized gradient approximation approach. The calculated work function correlates well with the hole tunnelling barrier and conductance of the molecular device, which further authenticate the coupling strength between molecule and electrode. Molecule under consideration also exhibits the multiple negative differential resistance and rectification ratio with all the different electrodes, due to its asymmetrical structure. The molecular device using platinum electrodes exhibits the highest peak to valley ratio of 1.38 and rectification ratio of 3.20, at finite bias. The switching characteristics of different molecular device are justified with detailed transmission spectra and MPSH. These results indicate that L-aspartic acid and similar biomolecule can be vital to the growth of Proteotronics.

Negative Differential Resistance Induced by Intermolecular Interaction in Molecular Device

2011 ◽  
Vol 181-182 ◽  
pp. 312-315
Author(s):  
Cai Juan Xia ◽  
Ying Tang Zhang ◽  
Xue Jun Zai
Keyword(s):  
Charge Transfer ◽  
Transport Properties ◽  
Molecular Complex ◽  
First Principles ◽  
Negative Differential Resistance ◽  
Differential Resistance ◽  
First Principles Calculation ◽  
Molecular Device ◽  
Applied Bias ◽  
Donor Acceptor

Based on nonequilibrium Green’s function and first-principles calculation, we investigate the transport properties of the molecule device with a donor-acceptor molecular complex sandwiched between two electrodes. Numerical results show that a negative differential resistance under applied bias can be observed. The mechanism of negative differential resistance is mainly induced by the orbital match of molecule and electrodes as well as intermolecular charge transfer.

Perfect spin-filter, spin-valve, switching and negative differential resistance in an organic molecular device with graphene leads

RSC Advances ◽  
2014 ◽  
Vol 4 (36) ◽  
pp. 18522-18528 ◽  
Author(s):  
Yun Ni ◽  
Kai-lun Yao ◽  
Chao-qun Tang ◽  
Guo-ying Gao ◽  
Hua-hua Fu ◽  
...  
Keyword(s):  
Quantum Transport ◽  
Negative Differential Resistance ◽  
Spin Valve ◽  
Differential Resistance ◽  
First Principle ◽  
Molecular Device ◽  
Spin Filter ◽  
Multiple Effect ◽  
Valve Switching

A multiple-effect organic molecular device for spintronics is proposed by performing first-principle quantum transport calculations.

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