Electric and magnetic field modulated energy dispersion, conductivity and optical response in double quantum wire with spin-orbit interactions

Karaaslan, Yenal; Gisi, B.; Şakiroğlu, S.; Kasapoğlu, E.; Sarı, H.; Sökmen, I.

doi:10.1016/j.physleta.2017.12.018

Cited by 9 publications

(4 citation statements)

References 50 publications

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“…Technologically, QDs have many potential applications in microelectronic and optoelectronic devices. In this respect, by employing different approaches and potential shapes, many researchers have studied the electronic structure [2–5], binding energies [6–8], optical properties [9–15], electric and magnetic field effects [16–25], and other physical properties [26–30] of single electron QDs. As well known, it is easy to obtain analytical solutions for single electron QDs.…”

Section: Introductionmentioning

confidence: 99%

Energy states, oscillator strengths and polarizabilities of many electron atoms confined by an impenetrable spherical cavity

Yakar

Çakır

Demir

et al. 2021

Int J of Quantum Chemistry

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We have calculated the ground and excited state energies and the orbital energies of three-electron atoms inside impenetrable spherical cavity. Energy eigenvalues and wavefunctions are calculated from the variational approximation method which is a combination of quantum genetic algorithm procedure and Hartree-Fock Roothaan method. In addition, the important parameters such as static and dynamic polarizability, oscillator strength and pressure have been investigated as perturbative. The results reveal that cavity radius and impurity charge have played an important role on the polarizability, the oscillator strength and pressure of the system. In addition, it is seen that when cavity radius is extremely large, all energies and the other physical parameters approach the values of a free space atom. As the dot radius decreases, the polarizability of system decreases due to the strong spatial confinement, but the pressure exerting on the system as the cavity radius R is shrunk increases. In addition, as the impurity charge increases, the oscillator strength decreases.

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Section: Introductionmentioning

confidence: 99%

Energy states, oscillator strengths and polarizabilities of many electron atoms confined by an impenetrable spherical cavity

Yakar

Çakır

Demir

et al. 2021

Int J of Quantum Chemistry

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“…The magnetic properties of LDSS are worthy of rigorous study in view of understanding the electronic magnetism in nanoscale structures which often reveals exciting physics. [22][23][24][25][26][27][28][29][30][31] Such study includes an applied magnetic field which rearranges the density of states and thereby changes the energy spectrum of the carriers. From an experimental perspective, the changed energy spectrum, in turn, changes the binding energy and serves as a means to harness the performance of optoelectronic devices.…”

Section: Introductionmentioning

confidence: 99%

Influence of Noise–Anharmonicity Interplay on a Few Physical Properties of Quantum Dots

Arif

Roy²,

Ghosh

2021

Physica Status Solidi (b)

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Herein, a meticulous inspection of the tuning of a few important physical properties of quantum dots (QDs), arising out of the subtle interplay between Gaussian white noise (GWN) and anharmonicity, is performed. The physical properties considered are dipole moment, polarizability, Stark shift, magnetic susceptibility, binding energy, interband emission energy, and time-average excitation rate. The pathway of the introduction of noise (additive/multiplicative) to the QD system, coupled with the symmetry (odd/even) of the anharmonic potential present in the system produces delicate and diverse features in the aforementioned physical properties. These physical attributes consist of monotonic growth, monotonic decline, maximization, minimization, and saturation in these physical properties modulated by different extents of the interplay between the noise mode and the symmetry of the anharmonicity. The study holds relevance in view of potential technological applications of QDs under the simultaneous influence of anharmonic potential and noise.

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“…Apart from this, works on magnetic properties of LDSS deem importance in view of the development of spintronics, elucidation of electronic structure of LDSS [35], understanding the semiconductor-metal transitions in LDSS [41] and so on so forth. Impurity contamination to LDSS makes its magnetic properties more delicate [42][43][44][45][46][47][48][49][50][51][52][53].…”

Section: Introductionmentioning

confidence: 99%

Magnetic susceptibility of doped quantum dots: interplay between binding energy and noise

2020

Biointerface Res Appl Chem

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Current work focuses on realizing how the interaction between binding energy(BE) and noise influences the magnetic susceptibility(χ) of doped GaAs quantum dot (QD). The system is exposed to Gaussian white noise and the dopant is also characterized by a Gaussian function. The work also highlights the role of the pathway via which noise may operate in the system. We have found that it is the multiplicative noise that alters the χ profile significantly from that of a noise-free atmosphere. However, additive noise does not change the χ profile from that under noise-free state to any meaningful size. Often multiplicative noise induces paramagnetism in the system which otherwise shows diamagnetism. And the noise-BE interplay prominently determines the extent of diamagnetism displayed by the system.

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Electric and magnetic field modulated energy dispersion, conductivity and optical response in double quantum wire with spin-orbit interactions

Cited by 9 publications

References 50 publications

Energy states, oscillator strengths and polarizabilities of many electron atoms confined by an impenetrable spherical cavity

Energy states, oscillator strengths and polarizabilities of many electron atoms confined by an impenetrable spherical cavity

Influence of Noise–Anharmonicity Interplay on a Few Physical Properties of Quantum Dots

Magnetic susceptibility of doped quantum dots: interplay between binding energy and noise

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