Statistics of fluctuations of wave functions of chaotic electrons in a quantum dot in an arbitrary magnetic field

1994 ◽  
Vol 50 (15) ◽  
pp. 11267-11270 ◽  
Author(s):  
Vladimir I. Fal’ko ◽  
K.B. Efetov
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Wave Functions ◽  
Arbitrary Magnetic Field

Thermal and magnetic properties of cylindrical quantum dot with asymmetric confinement

2015 ◽  
Vol 93 (11) ◽  
pp. 1264-1268 ◽  
Author(s):  
Sukirti Gumber ◽  
Manoj Kumar ◽  
Monica Gambhir ◽  
Man Mohan ◽  
Pradip Kumar Jha
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Wave Equation ◽  
Energy Spectrum ◽  
Partition Function ◽  
Quantum Dot ◽  
Energy Levels ◽  
Wave Functions ◽  
Canonical Partition Function ◽  
Electric And Magnetic Fields

We studied the thermal and magnetic properties of a cylindrical quantum dot in the presence of external electric and magnetic fields. The energy spectrum and wave functions for the quantum dot of asymmetric confinement are obtained by solving the Schrödinger wave equation analytically. The energy levels are employed to calculate the canonical partition function, which in turn is used to obtain specific heat, entropy, magnetization, and susceptibility. These thermal and magnetic quantities are found to have direct dependence on confinement length, magnetic field, and temperature, thus the parameters of the system can be tuned to fit into more than one application.

MAGNETIC FIELD, PRESSURE AND TEMPERATURE DEPENDENT OPTICAL PROPERTIES IN A GaAs 9.0 P 1.0 QUANTUM DOT

2014 ◽  
Vol 6 (2) ◽  
pp. 1178-1190
Author(s):  
A. JOHN PETER ◽  
Ada Vinolin
Keyword(s):  
Magnetic Field ◽  
Optical Properties ◽  
Quantum Dot ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Photon Energy ◽  
Nonlinear Optical ◽  
Binding Energies ◽  
Nonlinear Optical Properties ◽  
Optical Rectification

Simultaneous effects of magnetic field, pressure and temperature on the exciton binding energies are found in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot. Numerical calculations are carried out taking into consideration of spatial confinement effect. The cylindrical system is taken in the present problem with the strain effects. The electronic properties and the optical properties are found with the combined effects of magnetic field strength, hydrostatic pressure and temperature values. The exciton binding energies and the nonlinear optical properties are carried out taking into consideration of geometrical confinement and the external perturbations.Compact density approach is employed to obtain the nonlinear optical properties. The optical rectification coefficient is obtained with the photon energy in the presence of pressure, temperature and external magnetic field strength. Pressure and temperature dependence on nonlinear optical susceptibilities of generation of second and third order harmonics as a function of incident photon energy are brought out in the influence of magnetic field strength. The result shows that the electronic and nonlinear optical properties are significantly modified by the applications of external perturbations in a 9.0 1.0 6.0 4.0 GaAs P / GaAs P quantum dot.

scholarly journals Temperature-Induced Plasmon Excitations for the α–T3 Lattice in Perpendicular Magnetic Field

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1720
Author(s):  
Antonios Balassis ◽  
Godfrey Gumbs ◽  
Oleksiy Roslyak
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Zeeman Splitting ◽  
Mass Term ◽  
Energy Dispersive Spectrum ◽  
Wave Functions ◽  
Transition Energies ◽  
Gap Opening ◽  
Quantizing Magnetic Field

We have investigated the α–T3 model in the presence of a mass term which opens a gap in the energy dispersive spectrum, as well as under a uniform perpendicular quantizing magnetic field. The gap opening mass term plays the role of Zeeman splitting at low magnetic fields for this pseudospin-1 system, and, as a consequence, we are able to compare physical properties of the the α–T3 model at low and high magnetic fields. Specifically, we explore the magnetoplasmon dispersion relation in these two extreme limits. Central to the calculation of these collective modes is the dielectric function which is determined by the polarizability of the system. This latter function is generated by transition energies between subband states, as well as the overlap of their wave functions.

scholarly journals Finite-frequency-dependent noise of a quantum dot in a magnetic field

2014 ◽  
Vol 89 (15) ◽  
Author(s):  
C. P. Moca ◽  
P. Simon ◽  
Chung-Hou Chung ◽  
G. Zaránd
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Finite Frequency ◽  
Frequency Dependent
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