Double quantum well triple barrier structures: analytical and numerical results

Abstract

-In this work we show an analytical result for the scattering in a particular type of double quantum well triple barrier structure and numerical results, via the Numerov method, for bound states of a double quantum well triple barrier inside of a infinite quantum well. For the last, we consider both, constant and position dependent mass.

Üçlü Ters Parabolik Kuantum Bariyer Çift Kuyu Potansiyelinde Enerji Seviyeleri ile Elektron Geçişinin Örgü Parametreleri ve Yoğun Lazer Alanına Bağlılığının İncelenmesi

“…Birçok çalışma tek kuantum-kuyu ve çift bariyer rezonans tünelleme yapıları üzerine odaklanmıştır [11][12][13][14][15][16][17] ancak rezonans tünelleme olayı üçlü bariyer rezonans tünelleme yapılarında da tanımlanmıştır. Potansiyel uygulanabilirlik (alan etkili transistörler, kuantum kuyuları, lazerler, elektro-optik modülatörler ve kuantum kuyu kızılötesi foto detektörleri) nedeniyle, çift kuyu üçlü bariyer rezonans tünel yapıları ilgi çekmiştir [18][19][20][21]. Üçlü bariyer RTD' leri ağırlıklı olarak, bellek uygulamalarında yüksek oranda kullanılan çoklu negatif diferansiyel direnç (NDR) bölgelerine sahip cihazın elektrik özelliklerinde çoklu tepe noktaları oluşturmak için kullanılmaktadır [22][23][24].…”

Tunnelling Effect for Quadruples Potential Using Matrix Propagation Method

“…The transmittance of electrons through potential barriers is a research topic that has caught by many researchers'. Martinz and Ramos [5] determine the transmission coefficient's value analytically and numerically on the potential triple barrier with two potential wells. Research on the potential triple barrier of GaN, SiC, and GaAs materials by Supriadi has a maximum transmission coefficient value of 0.819 [6], and Prastowo's research [7] on the potential triple barrier of Graphene material obtained a resonance phenomenon with the most considerable transmission coefficient value is 1.0000 at an energy of 0.9200 eV.…”

Optical Properties of Tuned Double Quantum Well Under the Electric Field

“…The effects of the applied external perturbations such as the pressure, temperature, electric, magnetic and intense laser field on the electronic and optical properties of the single, double or multiple quantum wells which have various confinement potential types are important topics of condensed matter physics and these effects have been extensively studied in different situations [1][2][3][4][5][6][7][8][9][10][11][12]. Intersubband transitions within the conduction band of quantum wells have unique properties which are including a large dipole moment or oscillator strengths [13], an ultrafast relaxation times [14] and a large tunability of transition wavelength.…”