Investigations of Optical Coulomb Blockade Oscillations in Plasmonic Nanoparticle Dimers

Lamessa Gudata,Ramaswamy Krishnaraj,R Shanmugam,B Stalin,Nagaraj Nagaprasad,Jule Leta Tesfaye,Abela Saka,L Priyanka Dwarampudi,Bharath Govindan

doi:10.1155/2022/7771607

Abstract

The exploration of Coulomb blockade oscillations in plasmonic nanoparticle dimers is the subject of this study. When two metal nanoparticles are brought together at the end of their journey, tunnelling current prevents an infinite connection dipolar plasmon and an infinite amplification in the electric fields throughout the hot spot in between nanoparticles from occurring. One way to think about single-electron tunnelling through some kind of quantum dot is to think about Coulomb blockage oscillations in conductance. The electron transport between the dot and source is considered. The model of study is the linear conductance skilled at describing the basic physics of electronic states in the quantum dot. The linear conductance through the dot is defined as G = lim ⟶ 0 I / V in the limit of infinity of small bias voltage. We discuss the classical and quantum metallic Coulomb blockade oscillations. Numerically, the linear conductance was plotted as a function gate voltage. The Coulomb blockade oscillation occurs as gate voltage varies. In the valleys, the conductance falls exponentially as a function gate voltage. As a result of our study, the conductance is constant at high temperature and does not show oscillation in both positive and negative gate voltages. At low temperature, conductance shows oscillation in both positive and negative gate voltages.

Highlights

Classical electromagnetism forecasts an infinite of the redshift hybridized noble metal nanoparticle plasmon polariton
The Coulomb blockade oscillations break down when thermal energy is equal to charging energy
Inference The close connections of our result and the objective of the study are in agreement with the theoretical explanation of the optical Coulomb blockade oscillations in plasmonic nanoparticle dimers

Summary

Introduction

Classical electromagnetism forecasts an infinite of the redshift hybridized noble metal nanoparticle plasmon polariton. The surface-to-surface distance approaches zero when there is a rapid increase in the field strength between the hotspot of two metallic nanopatrticles. One theory holds that quantum mechanical tunnelling of electrons prevents either type of deviations [1]. Decreases in the electric field strength within the hotspot result in a seamless transition from either the dipolar bonding plasmon to the charge transfer plasmon. A high degree of agreement exists between quantum mechanical theories and experimental results [2]. Quantum tunnelling accounts for the vast majority of the optical response of couples of plasmonic nanoparticles along within close proximity [3].

Objectives

Discussion

Conclusion