Designing cross-linked carbon nanotubes as perfect spin filter and spin valve

Zeng, Jing; Chen, Ke‐Qiu; Chen, Liezun; Deng, Xiaohui

doi:10.1016/j.orgel.2014.07.013

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…CNT has great potential in the field of nanotechnology. This can be used as an electro-mechanical sensor, transistor, spin filter, spin valve etc [13][14][15][16][17]. SWCNT has several advantages as an electrode.…”

Section: Introductionmentioning

confidence: 99%

Electronic transport properties of electrically doped cytosine‐based optical molecular switch with single‐wall carbon nanotube electrodes

Dey

Roy

2019

IET nanobiotechnol.

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This study represents an empirical model of cytosine-based optical molecular switch. This possible biomolecular switch has been designed using the first principle approach which is based on density functional theory and non-equilibrium Green's function. The quantum-ballistic transport property and current-voltage (I-V) characteristics of cytosine-based optomolecular switch have been investigated at 25 THz operating frequency. The influence of highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps on the electronic transmission and I-V characteristics has been discussed in detail. The aim of this study is to highlight the minimum conformational change during a single ON-OFF switching cycle. The biomolecule comprises switching behaviour when converts from straightened to twisted form during photoexcitement. The straightened and twisted forms of the molecule are represented as logic '0' and logic '1', respectively. This p and n regions of this switch has been made using electrical doping process. The current through the twisted form of the cytosine biomolecule is ∼1000 times higher than the straightened form. The maximum switching ratio 62.1 is obtained at 1 V bias. The origin of the switching behaviour of the biomolecule can be interpreted by quantum-ballistic transport model along with HOMO-LUMO gaps.

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